IR Infrared Stereo Wireless Headphone - Black (2 x AAA)
Model: IR300D - Color: Black - Stylish and lightweight IR headphone - System: - Infrared wavelength: 850nm - Carrier frequency: - Channel A: Left channel: 2.3Mhz / Right channel: 2.8Mhz - Channel B: Left channel: 3.2Mhz / Right channel: 3.8MHz - SNR: >=50dB - Frequency response: 30-15000Hz - Operating range: up to 12 meters - Automatically mute for headphone and auto power off if no signal is received about 5 minutes - Suitable for any car audio device - Power by 2 x AAA batteries (not included) - Comes with English manual