LPT03 Headset Wireless Infrared Dual/Single Channel Earphone (Black)

1. Headphone function: can be used wired and wirelessly 2. Car wireless earbuds can be connected to car DVD ceiling DVD headrest DVD 3. Specifications of technical parameters 1) Dual channel 2) Transmission frequency A channel) Right channel: 2.8MIHZ) Left channel: 2.3MHIz B channel) Right channel: 3.2MHZ) Left channel: 3.8MHz3) 4. Speaker impedance: 32ohm4 Effective distance: about 10 meters5 5. Sound Mode: Stereo 6. Signal to noise ratio: anp: ge6dB 7. Channel spacing: 40dB 8. Power supply: 2 AA batteries 9. Working voltage: 1.8-3V 10. Working current: about 20MA 11. Channel separation: greater than 40dB, signal-to-noise ratio: greater than 70dB 12. Frequency response: 20-20KHZ 13. Listening distance in open space: more than 8 meters 14. Automatic shutdown time when there is no signal: 2-4 minutes 15. Battery normal working time: more than 30h (using 6mAH standard alkaline battery)