In-Car IR Wireless Headphones (IR307 IR307D)

Model No.:IR-2008S
IR stereo wireless headphones (single-channel) in-car
Folding design and lightweight design for comfortable wearing
Auto mute and auto power-off function on headphones
Carrier frequency:Right channel: 2.8MHz Left channel: 2.3MHz
Speaker: 30mm mylar
Cone impedance: 32ohm
Effective range (maximum): about 10m
Audio model: stereo
S/N ratio: >60dB
Channel separation: 40dB
Frequency response: 30 to 20,000Hz
Power supply: 2 x AAA battery