Features: Explore a wide frequency and precise reception capabilities with the upgraded Malachite SDR Receiver. For radio enthusiasts, operators and perfect for radio enthusiasts. This receiver features a 3.5'' touches display and user friendly for easy operations. The metal housing ensures longlasting performances. Experience powerful functions like variable filter width and noise suppression, allowing you to fine tune your experience. Specifications: Battery: with 3000mah battery Noise: 0.6db Frequency range: 50khz-200mhz, 400mhz-2ghz Mcu:Stm32h743 Operating current:300ma Sensitivity: 0.30u (at 200mhz) Screen: 3.5inch touches screen Dynamic occlusion range: about 85db Screen display bandwidth: 160khz Screen Backlight: Controllable Size：about 115x75x32mm/4.53x2.95in Package Includes: 1Set SDR Receiver note: Due to the problem of lighting effects and shooting there will be tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment