1、UHF Wireless: UHF latest wireless technology, stable signal, no delay, no interference from home WIFI signal. (Only for recording, not compatible with amplifiers, speakers) A free 4pin to 3pin adapter is provided for camera and PC. 2、Noise Canceling and Portable: Omnidirectional microphone with high sensitivity pickup and intelligent noise canceling for clearer and more realistic sound. Mini metal clip allows you to easily clip on your collar, tie or pocket. 3、Long Distance Transmission: Wireless clip on microphones supports ultra long transmission distance, up to 50m in open areas. supports multiple simultaneous use (up to 40 groups), long press the transmitter "‑" for 3 seconds to switch channels. 4、Rechargeable: Wireless lapel microphone system has a built in 400mAh rechargeable lithium ion battery, which can be used for 5‑6 hours after 2 hours of charging, and the red light is on when charging and off when fully charged. 5、Applicable: Lavalier microphone supports phone recording for Youtube, for Google, live streaming, interview, video recording, universal for iOS and for Android (no need to download third party recording software for Android 9.0 or above). 2 x Receiver1 x Transmitter2 x Sponge Cover1 x Charging Cable1 x 3.55mm Connector1 x Instruction Manual  Item Type: Lavalier Wireless MicrophoneMaterial: ABSFrequency Range: 550.5MHz- 589.5MHzFrequency Response: 50hz-8KHzTransmit Power: 15dBmReceiving Sensitivity: ≥ -106dBmDistortion: <1%1KHzOperating Frequency: 40 Frequency PointsBuilt in Battery: 3 x 400mAh Lithium Battery