1. Stereo wireless receiving headphone(only for JH-604MA)
2. is mono sound
3. Carrier frequencies: 2.3MHz/ 2.8MHz + or - 5KHz, 3.2MHz/ 3.8MHz + or - 5KHz(only for JH-604MA)
4. Carrier frequencies: 2.3MHz + or - 5KHz, 2.8MHz + or - 5KHz
5. Speaker Impedance: 32 52905
6. S/N ratio: >55dB
7. Fully compatible with TV, CD, VCD, DVD, MP4, PC and other audio devices with IR transmission module built-in
8. Power requirement: 2 X AAA batteries (not included)
9. Suitable for global markets