Working distance up to 50m in area with obstacle.30 channels optional, convenient for multiple devices working together without interference from other channel signals.Real time monitoring can monitor the recording effect in real time and make it easy to adjust.Lattice LED with high resolution, low power display will hardly affect the whole standby time, the icon and font on the screen are concise and clear, can real-time understanding equipment operation status.With the built-in lithium-ion rechargeable battery, the battery can last up to 6 hours.We have a leather case for each device for your convenience.Each microphone has a screw hole that can be attached to the camera and tripod via our complimentary adapter.