1. Automated charging protection circuit,  (Through the USB cable, power can be directly  transmitted to the battery inside.)

2. Headset with the structure of the ergonomic design and comfortable to wear.

3. through infrared . transmisstion benefit for human)

4. Carrier Frequency:

 2.3/2.8MHZ

.5. Headset current consumption: less than 25mA.

6. Power: AAA1.5X2