adopts PET material, more powerful sound3. Support one key answering phone calls and volume controlling4. Suitable for people within 0 - 800 degrees myopia, and 0 - 400 degree hyperopia5. Adjustable pupil fit for different users6. Very good in heat dissipation7.Lightweight design for long time comfort, reduces eye fatigue8.Adjustable headband adds no burden to your head9. Built-in stretchable earphones, with soft memory foam for noise cancelingSpecifications:Model: BOBOVR Z4?VR Glasses Type: V