Feature:  
1)USB Transmitter       
2)Supporting fixed ID working mode, point to point and point to
 
multi-point, automatic scan channel function to avoid interference   
easily.
3)head-band fashionable design 
4)With high-performance protection circuits, it can extend battery life
and run out of completely
5)Powered by built-in rechargeable lithium polymer battery
6)up to 10meters effective range
7)rechargeable battery built-in earcup enduring 8hours

Specification:
1. Receive Distance: around 10m
2. THD<1%
3. Frenquency Range：20-20,000Hz
4. Modulation Mode：GFSK
5. SN: >80dB
6. Mic. Sensitivity：-30±3dB
7. Impedance：32 Ohm
8. Interface:USB
9.USB cable to charge headphone

OEM/ODM,Customized Logos/Designs are Welcome