Features 1、Lav Microphone: You can just clip the wireless microphone on lapel, and the mic will clearly collect all the voices. 2、Broad Matching: Compatible with computer, laptop, cell phone, digital camera, SLR camera, recorder and other device. 3、Flexible Using: Allows for wide application in live stream, meeting, interview, recoding and so on, very practical. 4、Reliable Works: The output volume is adjustable, meanwhile the omnidirectional pick up pattern ensures little noise. 5、Easy Carrying: Light in weight and compact in size, the convenient carrying will free your both for flexible movement. Specification Item Type: Wireless Lavalier Microphone Material: Plastic Colour: Black Pickup Pattern: Omnidirectional Frequency Range: 45Hz-20KHz Peak Output Level: +3dBu Maximum SPL: 100dB SPL (1KHz at 1m) Dynamic Range: 102dBA (Mic Preamp) Power Requirements: Built in lithium battery can be charged via USB. Analog Input: 3.5mm TES lavalier microphone input (transmitter) Analog Output: 3.5mm TRS (receiver) External Microphone Input: 20Hz-20KHz Transmitter Built in Battery: 1 x lithium battery 3.7V 400mAh (shipped with built in battery) Receiver Built in Battery: 1 x Lithium battery 3.7V 400mAh (shipped with built in battery) Package List 1 x Receiver 1 x Transmitter 2 x Audio Cable 1 x USB Cable 1 x Windshield 1 x Noiseproof Ring