The BY-WM8 Pro-K1 UHF Dual-Channel, Single Bodypack Wireless Lavalier Microphone System from Boya includes a 48-channel, TX8 Pro UHF wireless bodypack transmitter, a RX8 portable UHF wireless receiver, an omnidirectional lavalier mic, a stereo 3.5mm mini-jack cable and a 3-pin XLR cable. This system features an easy-to-read LCD display and is suitable for a wide range of operations such as interviews, ENG (electronic news gathering, EFP (electronic field productions), film production, business, and educational applications. The BY-WM8 Pro-K1 system easily mounts to DSLRs, camcorders, and video cameras and includes a detachable shoemount with locking knob and belt clips. Other features include: a wide switching RF bandwidth, PLL-synthesized tuning, digital companding circuitry, mic and line inputs, mute, and a headphone output for monitoring on the receiver. Furthermore, each transmitter and receiver is powered by two 1.5V AA batteries and offer more than 6-hours of continuous operation. The range of operation without obstacle is 300'. The power LED glows blue when the unit is on and glows red when the power is low. Finally, the lavalier and output cables terminate with 3.5mm locking connectors to securely stay in place during operation. Batteries are required.