Stable transmission distance of 30-50 metres with low latency 5ms for device accessibility. Large capacity rechargeable lithium battery,Lasts up to 4 hours. High-penetration sound, lossless reproduction of vocals. Plug and play , wired microphone to wireless microphone, the wired trouble. Automatic channel search,Traditional physical button operation is anti-miscontact and more intuitive. TYPE-C cable charging, the device supports 48V condenser and dynamic microphone use. The device supports linking, mixing consoles, small amplifiers, combined amplifiers, sound cards and other devices. One key switch ONOFF, 48V0V switching, three gears reverb effect selection, with red, green, blue three colour display. You can also choose to turn off the reverb effect Emitter parameter: Carrier frequency range:2302MHZ-2387MHZ RF power output: 10dB Frequency response:50HZ-15KHZ Microphone pickup: moving-coil type Power Supply: 14500 battery Operating current: 22-24mA Receiver parameters: Carrier frequency range:2302MHZ-2387MHZ Working distance: 50-150 meters (depending on the environment) Working voltage: DC3.7V Operating current: 17.5-20mA Colour:Black Material:Metal Package Contents: 1 x Microphone Receiver 2 x Microphone Transmitter 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.