This VR Space virtual reality viewer can be regarded as your private 3D Cinema and bring you great game experience, and it is easy to operate. The item is designed base on the Google cardboard, And there are 7 points have been done to improve the product, it can be said that it’s the enhanced version of Google cardboard. Based on our understanding of Google Cardboard, our software, input, object distance adjustment, thermal, optical design, darkroom design, USB/Audio interface has done a lot of improvement.
Features:
It is a great supplement and extending device of the network set-top box and bring you wonderful experience of watching movies and playing games. 
Offers you super 3D picture effect and wonderful feeling. 
Thermal dissipation, when it is used with a long time, the phone will be hot, the 2 side an 1 back window could help on thermal dissipation.
Our lenses using a resin material, the light transmission has improved significantly, reducing the optical distortion and vertigo problem. 
Flexible headband and adjustable pupil distance as well as sight distance is suitable for different people.
Suitable for Android and IOS smart phones whose screen is between 4.5 ~ 5.7 inches. 
Both sizes holes of the 3D VR GLASSES is specially designed for the headset / data / charge cable, letting you charge your smart phone during enjoying movies.
Specification:
Material: ABS + Spherical resin lens
Frame Color: Black + Orange
Lenses Color: Transparent 
The Diameter of Lenses: 30 mm 
The focal distance of Lenses: 65 mm 
Support System: iOS, Android
Mobile Phone Screen Fit Size: 4.5 ~ 6 inches 
Head girth: 20 ~ 40 cm
FOV: 95 ~ 106 °
Package Size: 19 * 16 * 12.5 cm / 7.5 * 6.3 * 4.9 in 
Package Weight: 398 g / 14.1 oz 
Package List:
1 * 3D Virtual Reality Glasses  
1 * Rubber Band
1 * English User Manual