1. External wave wheel, the left and right sides of the wave wheel, can be adjusted before and after the height of the mask, better adapted to users wearing glasses
2. Shade design, effectively preventing light leakage when wearing the headset
3. Two heat dissipation holes design, no fear of light leakage, heat dissipation and ventilation
4. 75% increase in the effective force area of the mask, greatly reducing the pressure on the face and making it easier to wear
5. Size: about 17 x 11 x 8cm
6. Weight: about 95g
7. Note: only replacement mask, no other included