Designed for Dynamic Mic: XLR transmitter and XLR receiver works with any dynamic microphone, Audio mixer, PA system (Not Work with Condenser Mic or Device with Power).Provides stable and reliable wireless transmission. Ensures good performance for your every time. Cable free,up to 30m of wireless range(dependent on environmental factors). Built-in Rechargeable Battery: More than 5 hours working time after fully . Transmitter and receiver can charge simultaneously with the dual port USB cable. You can know the battery level when turn on the unit and the related channel's indicators. 1-Key and Multi-Channel: 1-Key to paring and supports multi-channel,can be set to divice frequency hopping, plug and play, compact and just make the wireless microphone system sample to use and easy to carry. Professional wireless has high reduction degree, strong anti-dry transmission and stable transmission Widely Used: Comes with XLR female to 6.35mm male microphone adapter, makes it compatible with audio mixers, recorder, loudspeaker, pa system, amps etc. Provides stable and reliable wireless transmission(Note:The Transmitter is only suitable for dynamic microphone without power or battery, not suitable for Microphone device with power.) Built-in battery capacity: 800 mA -1000 mA Battery life: 6-8 hours Signal to noise ratio: equal 75dB Frequency response range: 60Hz-15KHz size:11x1.6cm Material:Metal colour:Grey Package Contents: 1 * receiver 1 * transmitter 1 * 6.35 adapter 1 * charging cable 1 * English manual 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.