If you want to know anything about the product, if it is damaged you need a refund or return, please contact us. We will serve you with love Material: Acrylic Packing: glasses (batteries included), small sticky nose pad, extra battery 1 pair Size:175*160*45mm Net Weight: 60g When installing, press the positive poles(there are "+", letters and numbers on the surface) up. Note: Please remove the battery if you do not use it for a long time. Please peel off the protective film and isolation sheet before use.
