The OMNITRONIC VHF-100 is a handheld wireless microphone transmitter for VHF-100 receivers. It uses a dynamic cardioid capsule and operates at 205.75 MHz with an RF output power of 10 mW. The microphone is powered by one AA battery, includes an on/off switch and mute control, and provides a line-of-sight operating range of up to 30 m. Its plastic housing measures 24 cm in length and 5 cm in diameter and weighs 0.18 kg.