Wireless transmitter. Features: Beltpack wireless transmitter for the RØDELink digital wireless system. Comfortable and lightweight, it can be fitted to a belt or clothing and features a locking thread to ensure the microphone connection is as secure as possible. Specs: Power source: 2 X AA Battery Or Micro USB. Antenna: Internal. Input connection: 3.5 mm TRS Locking Jack Socket. Input impedance: 10 kΩ. Dimensions: 111 x 65 x 40 mm. Weight: 190 g.