Digital wireless system that operates in 2.4 GHz band within almost 120 m line-of-sight range, and contains handheld transmitter and USB receiver that can be combined with other Behringer product with USB Ultralink output. Handheld transmitter features high-quality microphone capsule for dedicated vocal applications, integrated Volume Up and Down button, Panic Mute function for eliminating the feedback, and has an increased range for audio sensitivity. It automatically pairs up with USB receiver that operates off of USB bus power. Transmitter is powered by 2 AA batteries with lifespan up to 8 hours. System frequency response: 20 Hz-15 kHz.