UHF Wireless performance: The MONO IEM System provide goodmonitor experience, avoiding interference by UHF wide audio signal transmission without latency. The Operation Range is about 164ft, in open space, line of sight Transmitter and Bodypack: Metal construction for transmitter to ensure use, while bodypack are Relatively small and refined, with independent volume control, Pause, frequency adjustment function. A Metal clip on the back of bodypack for carrying use.It works perfectly in various sound-monitoring occasions, stage performance, DJ, speech, lecture, studio recording, exhibit, instruction, musician, singer, guitar, etc Eighty channels: Eighty channels for anti-interference use,bring the clear pure sound back when using. Eighty frequencies are divided into eight groups, Ten channels in each group, which makes it faster and easier to adjust between two not close frequencies Quality and technology: With advanced circuit design and upgrade chips to improves the signal-to-noise ratio, This in ear monitor system offers clear sound and high fidelity with no latency and the stable signals, too What you get:1 x UHF wireless transmitter, 1 x Bodypack receiver, 1 x In-ear earbuds, 1 x Power adapter, 1 x Antenna, 2 x 6.5mm to 6.35mm cable, 1 x User Manual