OMNITRONIC WAMS-12 bodypack transmitter with an included headset microphone, designed for the WAMS-12BT2 system. The transmitter operates at a fixed carrier frequency of 863 MHz and provides up to 30 m range with line-of-sight. It uses two AA batteries, includes an LED battery-capacity indicator, and features a cardioid microphone with a 3-pin Mini XLR connection. The plastic housing is black and measures 6.6 × 2.4 × 11.2 cm, weighing 0.10 kg.