Suitable for: dynamic microphones/condenser microphones/musical instruments and other equipment, 21BIT/48KHZ high sampling rate. Automatic frequency matching: Automatically connects at startup, with 30 built-in channels, effectively avoiding signal interference and improving signal quality. Built-in high-performance conversion chip, 48KHZ sampling rate, accurately restores every detail of the sound. Plug and play, compatible with various wired microphones, supports 0V/48V conversion. Ultra-high frequency wireless transmission technology, built-in dual antennas, wireless transmission distance of 30 meters. Large-capacity lithium battery, longer battery life, can be used for 6-8 hours when fully charged. Technical parameters: Adjustable channels: 30 adjustable channels Modulation mode: DOPSK Frequency stability: ±3PPM Frequency response: 40Hz-20KHZ Working range: 50-80M Working voltage: built-in 3.7V, 500mAh lithium battery, use time 6-8 hours Colour: As Shown Material: plastic Note: Due to different lighting or displays, the actual product may have color differences Package Contents: 2 x Transmitter 2 x Receiver 4 x adapter 2 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.