Nux B3 microphone wireless system.

NUX B-3 Wireless Microphone System
The NUX B-3 is a rugged 2.4GHz wireless microphone system designed for those who want to enjoy their favorite wired microphone as wireless. The B-3 is a rechargeable battery powered system that quickly and easily connects to the mic and input xlr jacks. No wires at all and no costly batteries required as it is fully USB rechargeable.

1. Compact Size