Xvive U4R In-Ear Monitor Wireless Receiver

• Power switch: switches unit on/off
• Headphone Output: 3.5mm output Connect to earphones or headphones
• Channel status LED: indicates selected channel
• Channel switch: selects Channels 1-6
• Volume control: Adjust the volume of headphone output
• RF Status LED:
• ON = Transmitter is on and link is established
• Flashing = Signal connection interference
• OFF = Transmitter off or unlinked
• Power status LED: indicates power status:
• Led off = 100% ~ 30%
• Solid red = 29% ~ 11%
• Flickering red = less than 10%
• USB charging port
• Antenna.

See U4 Complete System Here (Receiver and Transmitter)

• Dimensions 47 X 41 X 60 mm
• Weight 118g
• Housing Molded plastic and cast metal
• Battery 3.7V Rechargeable Li-ion, 1200mAh
• Impedance 6-600Ω
• Audio output Connector 3.5mm stereo output
• Battery Life Up to 5 Hours
• Antenna Impedance 50Ω
• Antenna Type  1/4 Wave Sleeve Dippole, Non-removable
• Number of Antenna 2