Lightweight and give you a high- 3D . No batteries required and 't need recharging. Polarized lens to reduce and increase . Adopting high material, environmental-friendly. Low degree of color deviation of glasses ensures wider viewing angles. Type: 3D Glasses Viewing Experience: Non-Immersive 3D Glasses Type: Polarized Model: VQ163R Item Size: . 15.3 x 4.1 x 0.4cm / 6 x 1.6 x 0.2inch Item Weight: 12.9cm / 0.45oz color:Black Material:plastic Package Contents: 4 x Virtual Reality 3D Glasses Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.