The product passed ANSI Z80.3 drop ball test. At a temperature of -10℃~42℃, the critical impact velocity to scratch the lens is 310FPS, the critical impact energy to broke the lens is more than 3 joules.
Suitable head circumference: 52-64cm
The product passed ANSI Z80.3 drop ball test. At a temperature of -10℃~42℃, the critical impact velocity to scratch the lens is 310FPS, the critical impact energy to broke the lens is more than 3 joules.
Suitable head circumference: 52-64cm
| Manufacturer |
|---|
