China manufacture specifications:
Channel: Dual
◆Infrared Wireless headphone
◆IR transmitting frequency:
a) A channel: 2.8MHz for right channel; 2.3MHz for left channel
b) B channel: 3.8MHz for right channel; 3.2MHz for left channel
◆Speaker Impedance: 32 Ω
◆S/N ratio: ≥60dB
◆Transmission Distance: >10m
◆Foldable design, convenient for traveling users, especially users of in car audio devices(Portable DVD , GPS, etc)
◆Fully compatible with TV,CD,VCD,DVD, MP4,PC and other audio devices
◆Power Requirement:
Transmitter: 12V AC Adapter(Included)
Receiver: 2 X AAA batteries
(We're sorry but we do not offer batteries, for safety reason, batteries are banned by express company)
◆Wired Headphone connection jack design
◆Distortion:
