1)USB Transmitter   
2)CD sound quality
3)neck-band fashionable design
4)2.4G technology
5)comfortable earpad for long time listening 
6)up to 10meters effective range
7)rechargeable battery built-in earcup enduring 8hours

 
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 (Optional for a 3.5mm jack adaptor transmitter)
9. USB cable to charge headphone

OEM/ODM,Customized Logos/Designs are Welcome