Type	Full Bone-Conduction Headphone
Operating Temperature	-30℃ ~60℃
Storage Temperature	-40℃ ~70℃
Protection Grade	IP66
keystroke Life	200,000 times
Humidity	95% at 40℃

Application:

1. Anti-riot（need wear gas mask without interrupting the communication）

2. In high noisy environment and need block the ears;

3. Open ears to pick up the around sound, no affect the radio communication.

4. Defence and HD communications for mass incidents.

Competitive products：

Japan TEMCO

Product Characteristics