1、Using professional noise reduction technology, noise suppression and anti-whistle, for clear sound quality. 2、Multiple groups are used without cross frequency, the microphone frequency is U‑band frequency conversion, and there are multiple groups of frequency points that can be adjusted. 3、UHF frequency band, stable signal, open and barrier-free 50 meters transmission and recording, no matter the distance of the mobile phone, the recording sound is equally clear and stable. 4、Convenient to wear, small body, with back clip design, can be clipped on clothes arbitrarily, such as neckline, T‑shirt cuffs. 5、Compatible with most smartphones and tablets such for iOS Phone/Xiaomi/Samsung, etc. 6、Including one receiver, one microphone, suitable for mobile phone recording video remote pickup. 7、Sound signal transmitting and receiving equipment, originally equipped with 3.5mm/0.1in plug and 3.5mm/0.1in adapter (suitable for desktop and SLR cameras). Condition: 100% Brand New Item Type: UHF Microphone Color: Black Material: ABS Audio Signal: Digital Sampling Frequency Range: 536MHZ-799.5MHZ Pairing Method: Automatic Pairing Frequency Response: 50Hz-16KHz Transmission Method: UHF Power Consumption: 0dB Current <75ma Power Supply: Built-in Polymer Lithium Battery 400mah Audio Output: Mixed Output Microphone Core: Capacitive Charging Port: DC 5V Linking Mode: Factory Default Automatic Pairing Wireless Distance: Approx. 50m/164in(Classroom Environment) 1 x Transmitter 1 x Receiver 1 x Charging Cable 1 x Windproof Cotton 1 x Adapter 1 x Manual