Test reason: the lens holder has certain ability of lens retention, protection
The card is safe to wear for 2 years or above to prevent the frame from having a slight impact
Or twisted and distorted to affect the effect of wearing
Parameters:
1. Pneumatic device: 3 pa
2. Electronic display and automatic timing device
3. Size: 30 x 32 * 33 CM (long * wide x height)
4. Weight: 16 Kg
Note: air pressure pump user is prepared
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