Stable transmission distance of 30-50 meters with low latency greater than 5ms for device accessibility. Large capacity rechargeable lithium battery, lasts up to 4 hours. High-penetration sound, lossless reproduction of vocals. Plug and play, converts wired microphone to wireless, eliminating cable clutter. 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 with mixers, small amplifiers, combo amplifiers, sound cards, and other devices. One-key switch ON/OFF, 48V/0V switching, three-level reverb effect selection, with red, green, blue color display. Reverb effect can also be turned off. Emitter parameters: 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: DC 3.7V Operating current: 17.5-20mA Color: Black Material: Metal Package Contents: 1 x Microphone Receiver 2 x Microphone Transmitters 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.