1. Hi-Fi stereo wireless headphone
2. Use PLL technology to make sure the transmitting and receiving more reliable and stable
3. Receiving by point to point, convenient to operate
4. Auto mute function available for headphone
5. 3 working frequencies to avoid possible interference
6. Transmission frequencies: 863. 5MHz, 864. 0MHz,864. 5MHz/ 899.5MHz, 900MHz, 900.5MHz
7. S/N ratio: >55dB
8. Transmission distance: 100 meters(without obstacle)
9. Power requirement: Transmitter: 9V AC adapter(Included)
                                 Receiver: 2 X AAA batteries (not included)
10. Suitable for European market or USA market