Features: Wireless Microphone SystemOne transmitter triggered by one receiver mode, plug-and-play, no need any APP, suitable for smartphone vlog, live streaming, interview, online chatting, etc. Long Distance Stable TransmissionEffective transmission range is up to 20M, easy to achieve long-distance recording; With built-in intelligent noise reduction module to filter out the noise and improve sound quality. Mini Clip-on MicrophoneThe microphone adopts classic mini black style design, you can fix it to your collar easily via the backside clip; and omni-directional polar pattern can pick up sounds for 360 all directions. Wireless Charging Case for MicrophoneThe microphone has built-in rechargeable lithium battery, you can charge it via the Type-C interface; also comes with a wireless charging case that allows you to charge the microphone anytime anywhere. Mini Type-C ReceiverThe type-C receiver is compatible with Android smartphones. The receiver is powered by smartphone. If the phone is low power during usage, you can charge it directly through Type-C port in the receiver. Specifications: Color: Black Material: ABS Microphone Battery: 60mAh Charging Case Battery: 300mAh Input Voltage: 5V Signal to Noise Ratio: 64dbm Delay Time: 30ms Sensitivity: -42db Frequency Response: 20-20Khz Transmission Distance: 20M/60ft Receiver Size: 4.5 * 2.5 * 0.6cm/ 1.8 * 1 * 0.2in Microphone Size: 4.5 * 1.6 * 1.5cm/ 1.8 * 0.6 * 0.6in Packing List: 1 * Receiver 1 * Clip-on Microphone 1 * Charging Case 1 * Charging Cable 1 * User Manual(English)