1. 9 ultra-low latency,20 m -free reception,it can use outdoor live broadcast and take a small video.2. It doesn't need APP,plug-and-play,one-click connection,easy to wear.3. Intelligent noise reduction,long endurance of 10 hours,easy to cope with all kinds of noisy environment,worry-free ,meet your needs for a day.4. 360 full pointing ,record detail of the sound.5. Small and convenient,it compatible with devices,support mobile phone, tablet, camera, notebook,etcFrequency: 20KHzInput voltage: 5VCharging port: for Type-CBattery capacity: 200mAhTransmission Distance:20 m freeColour:blackMaterial:plastic+metalSize:48.5 x 32 x 14mmPackage Contents:1 x Rechargeable Wireless Microphone1 x Receiver1 x USB cableOnly 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.