This unit comes with a 4-pin male XLR connector. One known issue is that the cover of the muffs may start to peel off.

Using this RTS HR - 2 A4M intercom headset is easy. Just connect it to your device via the 4 - pin male XLR connector. When using, make sure the connection is secure to get clear sound. Be gentle with the muffs as the cover may start to peel off. For maintenance, keep it in a dry place and clean it regularly with a soft cloth. Avoid using harsh chemicals on it.