XVive U4 Wireless System Bundle 4R, In-Ear Monitor Wireless System Bundle, Set includes: 1x Transmitter + 4x Receivers, Plug-and-Play application, Light, compact bodypack can be attached to a belt or to the strap of the instrument, Integrated, rechargeable lithium-ion battery, Range of up to 27.5 m (without obstacles), 6 Switchable channels, Frequency range: 20 - 20,000 Hz, 2.4 GHz ISM frequency band for worldwide use, 107 dB Signal-to-Noise ratio (dynamic range), Up to 5 hours of battery life when fully charged, Power switch on the transmitter and receiver, AUX/Line switch on the transmitter selects between line level (+4 dBu) and AUX level (-10 dBV), Stereo jack output on the receiver, 3.5 mm Stereo jack output on the receiver, Robust ABS/metal housing, Includes 1 USB Y-cable and 1 XLR male to 6.3 mm mono jack adapter@+*Note:* Register your product at https://shop.warwick.de/en/warrantyregistration to extend the warranty to 4 years.@+@+