1. 9 ultra-low latency, 20m free reception, it can be used for outdoor live broadcast and recording a small video. 2. It does not need APP, plug-and-play, one-click connection, easy to carry. 3. Intelligent noise reduction, 10-hour long endurance, easy to handle all kinds of noisy environments, worry-free, meeting your needs for a day. 4. 360 full direction, recording the details of the sound. 5. Small and convenient, it is compatible with devices, supports mobile phone, tablet, camera, laptop, etc. Frequency: 20KHz Input Voltage: 5V Charging Port: for Type-C Battery Capacity: 200mAh Transmission Distance: 20 m free Color: black Material: plastic + metal Size: 48.5 x 32 x 14mm Package Contents: 1 x Rechargeable Wireless Microphone 1 x Receiver 1 x USB Cable 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 one. The allowed measurement error is +/- 1-3 cm.