备注： * Fold flat design * Infrared wireless stereo headphone (Single Channel) * Carrier frequency: 2.8MHz (right); 2.3 MHz (left) * Compatible with all vehicle AV applications * Auto mute and auto power off function * Comfortable wearing with adjustable headband * Personal volume control * Effective range up to 8 metres * S/N ratio: ≥60dB * Speaker: 30mm mylar * Power supply: Requires 2xAAA (1.5V) batteries
