Item Type: Wireless Lavalier Microphone Weight: Approx.69g / 2.4oz Material: ABS Color: Black Frequency: 2.4GHz Charging: Type-C Cable Charging SNR: 70dB Frequency Response Range: 20Hz-20KHz Directional Feature: Omnidirectional Battery: Lithium Battery 75mAh (Delivered With Built In Battery) Transmission Distance: Approx.20m / 21.9yd Barrier Free Package List 1 x Wireless Microphone 1 x Receiver 1 x Manual 1 x USB Data Cable 1 x Collar Clip 1Plug and Use at Any Time: Get rid of the cable binding, automatic pairing, plug and use at any time. When the receiver is plugged in, it automatically connects. 2Recording Every Detail of Sound: High density blowout proof sponge, high sensitivity microphone, 360 no dead angle radio, quick response, delicate radio, can effectively reduce the interference of the surrounding environment, recording every detail of the sound. 3High Performance: High performance wireless microphone, signal stability, barrier free distance of more than 20m / 21.9yd, free recording is not limited. 4Built in Noise Reduction Chip: Built in noise reduction chip, strong anti interference ability, effectively identify the original sound, in a noisy environment can still be clear recording. Wireless collar clip microphone makes it easy to wear, stable signal, clear sound, easy to record high quality audio. 5Long Endurance: Built in 75mAh battery, long term battery life of 5 hours, short video recording and live recording can be easily handled in a variety of noisy environment, without worry, which can meet your needs for a day.