Features: COMICA CVM-WS50 wireless mic system features 6 channels, wide frequency range and up to 60m/197ft effective distance(30m in barrier area). Built-in metal phone holder suitable for phones whose width is less than 8.9cm. Remote control help to take selfie or control phone shooting easily. LCD screen for displaying channels and audio status. Support stepless volume adjustment, mute, and real-time audio monitor. Built-in rechargeable battery can last for about 8h. Extendable for connection with grip(included), tripod, LED light etc. Sent with a portable carry bag.