Features: Utilizing the cost-effective ADF4351 chip as a reference signal source for precise frequency measurement. Performance detectors measure signal amplitude with software-adjustable parameters. Features an STM32F4 series single-chip microcomputer and a 4.3-inch color LCD screen. Housed in a robust black aluminum alloy casing. Designed for a wide range of users, including walkie-talkie enthusiasts and toy remote control hobbyists. Unlock the potential of your devices with our spectrum analyzer. From analyzing walkie-talkies to optimizing toy remote controls, our spectrum analyzer is your versatile tool. Explore frequencies and measure amplitudes effortlessly. Take control of your wireless world with our 4.3-inch LCD Spectrum Analyzer. Explore frequencies, measure amplitudes, and unlock new possibilities in radio technology. Specifications: Material: Aluminum Alloy, Metal Screen Size: 4.3 inches Battery: 1x 2500mAh Battery (Built-in) STM32F407VET6 MCU + 4.3-inch TFTLCD (480x800) Color LCD Screen Aluminum Alloy Shield + Encoder Control + English Display + USB Power Supply. Application Areas: walkie-talkie, toy remote control, 2.4Gwifi Performance Indicators Spectrum Display Ranges: 35Mhz-4400Mhz Input Impedance: 50ohm RBW: 10kHz, 50KHz, 100kHz, 200kHz, 500KHz adjustable Screen Scanning Points: 700 Span: 7m(10kHz), 35m(50KHz), 70m(100kHz), 140m(200kHz), 350m(500KHz). DBMrange: 70dB to +10dB. No internal amplifier circuit; an external amplifier is needed to measure small signals. Size: Approx. 14.5x3x7cm/5.71x1.18x2.76in Note: Please allow 1-2cm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 Set Frequency Analyzer