Focal length: 70-75mm diameter:42mm FOV: 70 degree Adjustable range: 65-75mm Material: ABS+PC Interpupillary distance: 58-72mm Size: 20*14*15cm It's very small and light, portable to use. The 3D virtual reality glasses has been specially designed to clearly amplify the picture of your mobile phone and give you a wonderful 3D experience. Perfectly compatible with more than 90% of the mainstream mobile phone, and other mobile phones. It is available at a reasonable price. Brand other SKU SO445EL19IW00NAFAMZ-68320