The BOYA BY-WM8 Pro-K7 is an upgraded UHF Wireless Microphone System for capturing audio with dual subjects, features an easy-to-read LCD display, 48 UHF channels, automatic locked function, and selected mute function. Including a bodypack transmitter and a XLR plug-on receiver, the wireless microphone system is suitable for live vocals, presentations, interviews, ENG/EFP, film production, etc. This UHF Wireless microphone system is ideal for live vocals, presentations, interviews, ENG/EFP, film production, etc. XLR plug-on receiver can work with XLR camera, camcorder, audio recorder and other audio/video recording devices A or B two channel groups for transmitters and a receiver; selectable stereo mode and mono mode; 48 UHF channels Supports sound monitoring by 3.5mm headphone output on receiver, and selectable mute function Excellent signal transfer and lower distortion, and operation range can reach up to 50M/164ft(without obstacle) Transmitter and receiver both have easy-to-read LCD display and supports automatic LCD-locked function Specifications: Oscillator Type: PLL synthesized control oscillator RF Output Power: 10mW Channels: 48 Frequency Response: 40Hz-18kHz Distortion: 0.5% or less Reference Audio Input Level: -60dBV Operation Range: 50M/164ft(without obstacle) Power Supply: 2 * AA batteries(not included) Transmitter Size: 10.3 * 6.2 * 2.2cm/4.1 * 2.4 * 0.9in Transmitter Weight: 82g/2.9oz Receiver Size: 10.5 * 6.8 * 2.5cm/4.1 * 2.7 * 1in Receiver Weight: 73g/2.6oz