1. Infrared wireless stereo headphone (single channel).
2. Compatible with all vehicle AV applications.
3. Auto mute and auto power off function.
4. Comfortable wearing with adjustalbe headband.
5. Personal volume control.
1. Carrier frequency: 2.8MHz (right), 2.3MHz (left). 2. Effective range up to 8 metres. 3. S/N ratio: ≥60dB. 4. Speaker: 30mm mylar. 5. Power supply: requires 2 x AAA (1.5V) batteries.