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Tiny-SA Ultra+ ZS406 Spectrum Analyzer, 2025 Upgraded 4.0 Inch 100kHz-5.4GHz HW V0.4.6 Handheld Frequency Analyzer with Upgraded ZS406 Tiny-SA Ultra+:This New Version V0.4.6.1 Spectrum Analyzer is developed by Hugen, with 4.0 inch 480 x 320Best Value Fosi Audio 
Fosi Audio Music Visualizer, Sound Pickup Spectrum Analyzer, Vintage Tube RGB Ambient Light, Microphone Voice Picking Vo Musical Resonance: The lights dynamically pulse to the rhythm of the music, creating an immersive audio-visual experiencAdvawit 
Tiny-SA Ultra ZS407 7.3GHz Spectrum Analyzer: 2025 Upgraded 4 Inch HW V0.5.4 100kHz-7.3GHz Handheld Tiny Frequency Analy 2025 Upgraded Tin-ysa Ultra ZS407 Spectrum Analyzer: Supports an ultra-wide frequency range of 100kHz–7.3GHz, deliveringGQ 
GQ Advanced Multi-Field Electromagnetic Radiation 3-in-1 Emf Elf Rf Meter, Cell Tower Smart Meter Hidden WiFi Signal Det Multiple high sensitivity sensors installed for detecting Power line, Smart meter, Cell phone, Microwave etc.Nidemao 
Portable Tiny-SA Spectrum Analyzer Handheld Tiny Frequency Analyzer,MF/HF/VHF Input for 0.1MHZ-350MHZ and UHF Input for Wide Frequency Range – Covers 0.1MHz-350MHz (MF/HF/VHF) with high precision and 240MHz-960MHz (UHF) for extended analysiDouk Audio 
Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display Dedicated VFD spectrum display, Resolution 25 X 15. Support 32HZ-16KHZ frequency sweep, Ensure the accuracy of each bandAdvawit 
4 Inch Tiny-SA Ultra Spectrum Analyzer,100kHz to 5.3GHz Handheld Frequency Analyzer,2-in-1 Signal Generator 100kHz to 80 【Wide Frequency Range】Tiny-SA ULTRA measures from 100KHz - 5.3GHz: Spectrum Analyzer for 0.1-800MHz, with Ultra mode enaGeneric Music Spectrum Equalizer, 31-bands Audio Spectrum Analyzer With Full-color Display, Dual Channel 15-bands Digital Equali 【Dual-Channel 15-Band Digital Equalizer】: This device features a dual-channel, simultaneous 15-band equalizer that adjusGeneric LED Music Spectrum Display, 384 LED Music Rhythm Analyzer with Clock, 20 Spectrum Display 7 Color Modes, 1624 Segment Rh LED Light: This music spectrum display consists of 16 columns and 24 rows with a total of 384 RGB leds, bright and colorJINdanju JINdanju Ultra 4Inch Spectrum Analyzer Plastic Handheld TINY SA Frequency Analyzer Add 32GB Card Network Tester 2-in-1 Multifunctional Frequency Analyzer & Signal Generator - When not used as Spectrum Analyzer it can be used as SignSUCRFXJ 22-Band Digital Audio Equalizer, Music Spectrum Analyzer，Stereo Graphic Equalizer with 10 Preset Effects, Automatic Nois 22-Band Digital Audio Equalizer :High/mid/bass independent adjustment function, compatible with multiple device inputs,10% Off Jiawu Colorful LED Music Spectrum Display, Audio Spectrum Analyzer, Rhythm Light Level Voice Sensor Clock, RGB Music Sound Met 【LED Light】This music spectrum display consists of 16 columns and 24 rows with a total of 384 RGB leds, bright and colorXUMIUZIY Spectrum Analyzer, Audio Visualizer, Sound Control Light, LED Music Spectrum Display for Gaming Room Car Decoration, for Sound Control Pickup Rhythm Lights: Pickup ambient light is equipped with a built in sound sensor, capturing surroundingSeesii Upgraded NanoVNA-F V2 Vector Network Analyzer 50kHz-3000MHz HF VHF UHF VNA Antenna Analyzer 4.3 inch with 5000mAh,Measur 【4.3 inch Large Touch screen and powerful function】Handheld Vector Network Analyzer using 4.3-inch IPS TFT LCD screen, wCryfokt Audio Spectrum Analyzer, 384 LED 1624RGB Colorful LED Music Spectrum Electronic Clock Voice Controlled Rhythm Light Digi LED Light: This music spectrum display consists of 16 columns and 24 rows with a total of 384 RGB leds, bright and colorYYJKIK PLZ-SA35-4400-A1 Spectrum Network Analyzer Signal-Source Tracking-Source 35-4400mhz Amplitude Bandwidth Frequency LCD Di Made of aluminum alloy material, wear resistance and can provide long service time.Jiawu Audio Spectrum Analyzer with VFD Display, 32Hz-20KHz LED Music Spectrum, Sound Control Level Audio Indicator, Rhythm Ana 【High-Resolution VFD Display】Equipped with a dedicated high resolution VFD display, this sound spectrum analyzer displayXuegier Xuegier Ultra 4Inch Spectrum Analyzer Plastic Handheld TINY SA Frequency Analyzer 100KHz-5.3GHz Frequency Range - Compared to the (100kHz to 960MHz), the upgraded ULTRA has 100kHz to 5.3GHz ultra-wide measuring frequJiawu Jiawu LED Music Spectrum Display, Wireless Audio Spectrum Analyzer with 12 Light Tubes Adjustable Color Brightness, Prec 【HIGH SENSITIVITY WIRELESS】 The LED music spectrum display screen effectively filters background noise and adopts AGC auGQ Advanced EMF Meter GQ EMF-390 3-in-1 EMF ELF RF Meter, 5G Cell Tower Smart Meter WiFi Signal Detector RF up to 10GHz wit Read EMF, RF and EF at same screen at onceSharainn Sharainn Spectrum Analyzer, Sound Control Audio Visualizer, PWM Brightness Control, LED Music Spectrum Display for Gamin 【Stable Design】: Equipped with a soft shutoff feature, voice activated rhythm light automatically down when no signal isJiawu Jiawu Spectrum Analyzer, Music Voice Rhythm Spectrum Display, USB Powered RGB LED Ambient Lights with Clock, 12 Dynamic 【COLOR DISPLAY】: This digital equalizer adopts colorful LED display, which make it looks dazzling when frequency band chUbiquiti UBIQUITI WiFiMan Wizard, Portable Spectrum Analyzer, Designed for WiFiMan iOS/Android Apps UbiQuitiLAPOOH LAPOOH SA6 Portable Spectrum Analyzer Signal Generator 3.2 inch Touched Screen Multifunctional Handheld Spectrum Analyze This SA6 Spectrum Analyzer built-in signal generator, when not doing spectrum analyzer, it can be used as signal generatSxhlseller Handheld Spectrum Analyzer, 100kHz to 5.3GHz Frequency Analyzer Signal Generator, 4 Inch Touch Screen, Equipped with LNA Rechargeable Battery: The spectrum analyzer features a powerful built in 3000mAh rechargeable battery, providing up to 8MIZISNR MIZISNR Digital Equalizer for Home Stereo Audio System, Professional 31 Band Dual Channel Graphic Equalizer Music EQ wit Precision 31-Band DSP Equalization with PC Tuning: Shape your sound with a professional-grade 31-band digital equalizer.Tiny-SA Ultra Spectrum Analyzer, 4" Touch Display 100kHz to 5.3GHz Handheld Tiny Frequency Analyzer with 32Gb Card 2-in- Xiuganpo Xiuganpo LED Music Spectrum Display, Audio Spectrum Analyzer with 12 Light Tubes, Dynamic Lighting & Multiple Modes, Plu SENSITIVE WIRELESS: The LED music spectrum display screen can effectively filter background noise and adopts AGC automatPHDAFO Spectrometer, HPCS310 Spectrometer Light Meter, High Accuracy 380-780nm Full Spectrum Analyzer Full Spectrum Precision - Covers 380-780nm wavelength range for accurate light spectrum and color analysisJectse Audio Spectrum Analyzer, 16x24 LED Music Spectrum Display, 20 Dynamic 7 Color Effects Precise Sound Level Meter, Built i Connection: Melody rhythm ambient lamp built in voice sensor, it requires power to operate without the need for a soundDpofirs Dpofirs RGB LED Music Spectrum Display, Audio Spectrum Analyzer with Display, 84 Dynamic Effects, Voice Sensor Pickup An [Versatile Display Modes] This music spectrum display adopts 384 RGB LEDs and features 12 display modes and 7 color modeDover Telecommunications Services Spectrum Analyzer Fundamentals ASHATA ASHATA LED Music Spectrum Display, Home Spectrum Analyzer Display with 12 Light Tubes, High Sensitivity Music Rhythm Lig SENSITIVE WIRELESS: The LED music spectrum display screen can effectively filter background noise and adopts AGC automatgernie Audio Spectrum Analyzer, LED Music Spectrum Display, Precise Sound Level Meter, Real Time Frequency Level Display, 3.5mm Sound Control Pickup Rhythm Lights: Pickup ambient light is equipped with a built in sound sensor, capturing surroundingSharainn Sharainn Spectrum Analyzer, Sound Control Audio Visualizer, PWM Brightness Control, LED Music Spectrum Display for Gamin 【Stable Design】: Equipped with a soft shutoff feature, voice activated rhythm light automatically down when no signal isXUMIUZIY XUMIUZIY Sound Spectrum Analyzer with VFD Display, 32Hz-20kHz Frequency Range, Adjustable Brightness and Decay Speed, Tr Wide Frequency Range: The LED music spectrum display supports a frequency scanning range from 32Hz to 20KHz, ensuring acYUEHISY YUEHISY Wireless LED Music Spectrum Display, Home Audio Spectrum Analyzer with 240 RGB LEDs, Walnut Wood Base, for Home SENSITIVE WIRELESS: The LED music spectrum display screen can effectively filter background noise and adopts AGC automatDpofirs Dpofirs Audio Music Visualizer, Sound Pickup Spectrum Analyzer, Vintage Tube RGB Ambient Light, for Gaming Room Car Deco [Accuracy Audio Response] The LED music spectrum display features advanced AGC technology and noise filtering for accuraJiawu Jiawu LED Music Spectrum Display, RGB Sound Pickup Spectrum Analyzer Display, 12 Light Tubes Audio Music Visualizer, Hig SENSITIVE WIRELESS: The LED music spectrum display screen can effectively filter background noise and adopts AGC automatGeneric 384 RGB LED Music Spectrum Display, 16x24 Voice Activated Pickup Music Rhythm Light with Clock, 12 Dynamic & 7 Color Eff 【Power Supply】This home audio spectrum analyzer is powered by USB 5V and can be applied through a phone charger or compuDcnhfdsw Dcnhfdsw SSA6G 35MHz-6200MHz Spectrum Analyzer Multimeter Spectrum Explorer with Touch Screen Portable Panoramic Analyze Extremely convenient for field use: weight as low as 400 grams, dimensions of 155 x 81 x 27 mm, power supply for up to 4Nidemao Tiny-SA Ultra Portable Spectrum Analyzer | 100kHz-960MHz RF Analyzer & Signal Generator | 2.8" Touchscreen Handheld (MF/ 🔍 Professional Spectrum Analysis Anywhere Tiny-SA delivers lab-grade precision in your pocket! Covering 0.1MHz–350MHz (Dpofirs Pro Audio Spectrum Analyzer, VFD Display Music Sound Visualizer, Car Home Audio Spectrum Analyzer, Music Control Level I Portable And Atmospheric Design: The LED sound level indicator's triangular casing allows it to stand independently on aLICAEVEY RGB LED Music Spectrum Display, Voice Sensor Pickup Analyzer with Alarm Clock, 384 LEDs 20 Dynamic 7 Colors, for Home Pa BRIGHT AND COLORFUL LED: 1624 LED music spectrum display built by 16 columns and 24 rows total 385pcs RGB LEDs, bright aAsixxsix Asixxsix LED Music Spectrum Display, Music Spectrum Analyzer Built in Sound Sensor, LED Ambient Light, Analyzer Display Sound Control: The music spectrum display has built in sound sensor, which can catch surrounding sound signals and conveBingfu Bingfu SMA Male to SMA Male RG316 Coaxial Jumper Cable 30cm 12 inch (2-Pack) for LNA Low Noise RTL SDR Dongle ADS-B Rece Connector: SMA Male 50 Ohm Connector; Cable: RG316 Coaxial Cable;Cryfokt LED Music Spectrum Display, 5V USB RGB Colorful Audio Spectrum Analyzer with 20 Dynamic Effects, 7 Color Effects, 1624 S LONG LASTING MATERIAL: music spectrum display adopts ABS material, wear-resistant, impact-resistant, long service life.Drphiru RGB Audio Visualizer, Spectrum Analyzer for Sunlight Alarm Clock, 384 RGB Colorful, 1624 Segment Rhythm Light Level, Voi LED LIGHT: The audio spectrum analyzer consists of 384 RGB LEDs with 1624 segment rhythm light level voice sensorSharainn Sharainn Spectrum Analyzer, Sound Control Audio Visualizer, PWM Brightness Control, LED Music Spectrum Display for Gamin 【Stable Design】: Equipped with a soft shutoff feature, voice activated rhythm light automatically down when no signal isDpofirs Dpofirs HiFi Car Sound Spectrum Analyzer Full Range Display for Car Enthusiasts Organic Light Emitting Diode (White Shel [VERSATILE DISPLAY OPTIONS] Toggle through 8 different effects for a personalized view, showcasing time, temperature, anPeakloong Peakloong SL10 50MHz-6GHz Log-Periodic Antenna for Spectrum Analyzer UWB Antennas UWB Antennas FREQUENCY RANGE: 50MHZ-6GHZGeneric 384 RGB LED Music Spectrum Display, 16x24 Voice Activated Pickup Music Rhythm Light with Clock, 12 Dynamic & 7 Color Eff 【Quality Assurance】The music rhythm analyzer is made of ABS material, which has strong toughness, wearresistance, impactGeneric Music Spectrum Display, Audio Spectrum Analyzer Display Sound Level Meter for Musicians and Audio Enthusiasts, Home LED Sound Control Pickup Rhythm Lights: Pickup ambient light is equipped with a built in sound sensor, graphic equalizer spexelea xelea Ultra 4Inch Spectrum Analyzer Plastic Handheld TINY SA Frequency Analyzer 100KHz-5.3GHz Add 32GB Card Network Test PC Control - Connected to a PC via USB it becomes a PC controlled Spectrum Analyzer or Signal Generator.-APP transfers dArtech House Spectrum Analyzer Theory and Applications Used Book in Good ConditionArtech House Spectrum Analyzer Theory and Applications Used Book in Good ConditionMOOKEERF MOOKEERF RG8X BNC Male to BNC Male Coaxial Cable 2FT 2PCS 50 ohm Ultra Low Loss for Antenna, RF Radio, Modem, Oscillosco [Specification]-Connector: BNC male to BNC male, impedance: 50 ohm, Cable type: RG8X.Generic Colorful LED Music Spectrum Electronic Clock, 16x24RGB Rhythm Pickup 12 Dynamic and 7 Color Effects Audio Spectrum Analy 【Dual Functionality】When sound is detected, it functions as a vibrant spectrum display, adding a lively atmosphere to anKcolly Kcolly SA6 Portable Spectrum Analyzer Signal Generator 3.2 inch Touched Screen Multifunctional Handheld Spectrum Analyze This SA6 Spectrum Analyzer built-in signal generator, when not doing spectrum analyzer, it can be used as signal generatTIKATARER TIKATARER Spectrum Analyzer, 25 Band LED Music Spectrum Display, VFD Screen Analyzer with Voice Control, Ideal for Music Wide Frequency Range: The LED music spectrum display supports a frequency scanning range from 32Hz to 20KHz, ensuring acLICAEVEY LICAEVEY Music Spectrum Analyzer LED Display, Home Audio Spectrum Analyzer with 12 RGB Light Tubes Adjustable Color Brig Accurate Audio Response Visualization: Experience precise sound visualization with advanced AGC technology and noise filBewinner Bewinner Music Spectrum Display with 384 RGB LEDs - 16x24 Segment Rhythm Light Bar with Voice Sensor and Clock, USB Powe ABS Material: The music rhythm analyzer is made of excellent ABS material, which has strong toughness, wear , impact , aNurnesy Nurnesy Car Sound Spectrum Analyzer Music Spectrum Display, Music Display Meter Car Visualizer with High Sensitivity Mic Diverse Display Options: Enjoy versatility with 8 different display effects that can be easily toggled through buttons.Decumeby Decumeby LED Music Spectrum Display, 240 RGB LED Audio Spectrum Analyzer with Dynamic Light Show and Customizable Visual [Accuracy Audio Response] The LED music spectrum display features advanced AGC technology and noise filtering for accuraOreilet Oreilet Spectrum Analyzer, Music Voice Rhythm Spectrum Display with Time & Date & Temperature & Humidity Display & Sound Diverse Display Options: Enjoy versatility with 8 different display effects that can be easily toggled through buttons.Academic Press Electrical Spectrum and Network Analyzers: A Practical Approach Yctze Yctze VFD Music Spectrum Analyzer Display, 32Hz 20KHz Frequency Range Display, High Resolution Visualizer with Clock & P Wide Frequency Range: The LED music spectrum display supports a frequency scanning range from 32Hz to 20KHz, ensuring acpcmehanik Sound Spectrum Analyzer PRO Real time analysis (RTA) of SPL (noise) and frequency spectrumFahgaer Fahgaer Duplexer V Dual Band Spectrum Analyzer with Tracking Source VHF Dual Band Spectrum Analyzer Portable Spectrum An The First Line Is The Center Frequency Center Frequency Power; The Second Line Captures The Strongest Or Weakest FrequenXunweiad Xunweiad Duplexer V Dual Band Spectrum Analyzer with Tracking Source VHF Dual Band Spectrum Analyzer Portable Spectrum A The First Line Is The Center Frequency Center Frequency Power; The Second Line Captures The Strongest Or Weakest FrequenLeefasy Leefasy Handheld Signal Analyzer 3.2 inch Display 35-6200 Megahertz USB Lightweight Spectrums Analyzer 【Package Includes】The package includes 1 Mini Signal Analyzer(without Card), USB cableYsyaxsyt Ysyaxsyt Duplexer V Dual Band Spectrum Analyzer with Tracking Source VHF Dual Band Spectrum Analyzer Portable Spectrum A The Cursor Points To The Frequency Range: The Value Is Centered On The Positive And Negative Range Of The Central FrequeLockmaner Lockmaner 4.3Inch TFT Color LCD Screen Handheld Portable Spectrum Analyzer 35M-4400Mhz Spectrum Analyzer Handheld Spectr 4. Use Stm32f4 Series Microcontroller And 4.3-Inch Color Lcd ScreenFdit Music Rhythm Analyzer, 20 Dynamic Effects 7 Color Modes 5V USB 2 Way Alarm Clock Voice or Cable Control Music Spectrum P 2 Control Methods: This display has built in voice sensor, only requires a power supply and does not require a cable conArtech House Modern Spectrum Analyzer: Theory and Applications Artech House Modern Spectrum Analyzer: Theory and Applications YZRDCXM Sound Pickup Spectrum Lamp,Music Rhythm Recognition Light,Audio Spectrum Indicator Analyzer with Nixie Tube,with 8 Nixie 【HIGH-SENSITIVITY WITH AGC TECHNOLOGY】Thanks to the exclusive AGC algorithm, the lamp automatically adjusts its sensitivGeneric Generic VFD Sound Spectrum Analyzer, Sound Indicator Rhythm Analyzer Music Spectrum Meter Music Spectrum Meter for Smart Crystal Clear Visuals: Featuring a dedicated 25x15 high resolution green VFD display capable of showcasing up to 25 EQ fDecumeby Decumeby LED Music Spectrum Display, Home Audio Spectrum Analyzer, High Sensitivity Music Rhythm Light Bar with 240 RGB SENSITIVE WIRELESS: The LED music spectrum display screen can effectively filter background noise and adopts AGC automatYOTENKO YOTENKO SMA Male to SMA Male RG142 Coaxial Cable Jumper 20 inch 50cm (2-Pack) | Double-Shielded for VNA, SWR Meter, Indu 【Robust Construction for Harsh Environments】- Molded into a single, integrated unit, this sma jump cable combines a corrSENECESLI SENECESLI VFD Music Spectrum Analyzer Display | 32Hz 20KHz Wide Frequency Range, Adjustable AGC Settings, High Resoluti Wide Frequency Range: The LED music spectrum display supports a frequency scanning range from 32Hz to 20KHz, ensuring acNDNCZDHC Logic Analyzer, LA1010 Logic Analyzers Spectrum Analyzer ‑50‑50V Input Analyzer Logic Analyzer Set with USB Cable Linkable window: The waveform window and the analysis result window can be linked, which is convenient for finding wavefLockmaner Lockmaner 1 Pcs 138-4400MHz Portable Spectrum Frequency Analyzer 4 Mode Handheld Spectrum Analyzer 2. 4 Modes: Spectrum frequency analyzer have 4 modes, such as net mode, spectrum mode, point mode, sweep mode. The defauDcnhfdsw Dcnhfdsw Mini Frequency Analyser Spectrum Analyser 2.4G Frequency Type B Accessory with Antenna Battery Spectrum Analyse 2. Can check the WiFi signal strength as well as detecting 4G signal working frequency of the mobile phone.Sxhlseller Sxhlseller Clock Sound Spectrum Analyzer, Music Spectrum Analyzer with 3.5mm AUX Input and Microphone, for Car and Home Receiver Mode: Doubles as a wireless module! Connect amps or speakers to the 3.5mm output port, pair with support for BTJMS Modern Spectrum Analyzer Measurements JMS Modern Spectrum Analyzer Measurements NDNCZDHC Logic Analyzer, LA2016 USB Logic Analyzer 16 Channels CH0-15 200M Sampling Rate Logic Analyzers ‑50V to 50V Spectrum Ana Support linkage: The waveform window and the logic analyzer result window can be linked, which is convenient for findingSENECESLI SENECESLI VFD Audio Spectrum Analyzer, LED Audio Spectrum Analyzer with Clock, Digital Music Visualizer for Signal Analy Applicable Device: The light board can only be connected to front end sound signals, such as sound output ports of devicEulbevoli Eulbevoli Music Spectrum Display 384 LED, 1624 Segment Rhythm Light Level Voice Sensor Pickup Analyzer with Clock 20 Dyn [Voice Sensor & Cable Control] Equipped with a built in voice sensor this music spectrum display requires only a power sLICAEVEY Music Spectrum LED Display, 2 Control Methods 384 LED Voice Sensor Pickup Analyzer Equalizer Spectrum Analyzer with Cloc LED Light: This music spectrum display consists of 16 columns and 24 rows with a total of 384 RGB leds, bright and colorBTER Spectrum Analyzer, 4.3In TFT Handheld USB Frequency Analyzer Portable 35MHz-4400MHZ 0.5PPM TCXO Network Analyzer Scannin Jiawu Audio Spectrum Analyzer, LED Music Voice Spectrum Display, Colorful RGB Light Rhythm Analyzer Clock Display, Sound Contr LED Light: This music spectrum display consists of 16 columns and 24 rows with a total of 384 RGB leds, bright and colorKeuwlsoft Spectrum Analyser Select FFT size & frequency rangeReland Sun Reland Sun KS16 Music Audio Spectrum Analyzer Kit, USB 5V LED Fantasy Crystal Cube Level Display, Extremely Accurate Sou This music visualizer spectrum has innovative design and perfect combination of music and art, suitable for both music aAsixxsix Asixxsix Sound Spectrum Analyzer, 8 Effects 10 Types of Spectrum and Waveform Displays, OLED HiFi Car Sound Spectrum Ana Diverse Display Options: Enjoy versatility with 8 different display effects that can be easily toggled through buttons.Xiuganpo Xiuganpo Colorful LED Music Spectrum Display, 384 RGB LEDs Voice Sensor Pickup Analyzer with 84 Dynamic Effects, USB Pow POWER SUPPLY: Music spectrum display adopt USB 5V 1A, power for 3W ,USB 5V power supply, can be powered by mobile phoneCryfokt Audio Spectrum Analyzer, 16x24RGB Rhythm Pickup Ambient Light 12 Dynamic and 7 Color Effects Music Spectrum Level Audio Sturdy Construction: Crafted from ABS material, this music spectrum analyzer resists to wear and impact, ensuring a longByttlerom Byttlerom 2.8 Inch Spectrum Analyzer Portable Handheld 100Khz-960Mhz Resistance Touch 320X240 Multifunction Analyzer Eas Built-In Battery, Supports Pc Connection, 2.8-Inch Capacitive Touch Screen, Frequency Accuracy 1ppmzozii zozii LED Audio Spectrum Analyzer Music Spectrum Dynamic Level Indicator for Audio Enthusiast The lever can be used to switch display modes, and the encoder can be used to control sound effects.