Product description 3D VR Glasses Specification: Color: Black Size: 3D VR Video Glasses: 20 X 14 X 10cm Suitable for Android and IOS smart phones with 3.5-6 Inch screen size, the max length*width is 4.62 X 2.46 inches. Such as: Samsung Galaxy Mega 2/ Galaxy Note 4/Galaxy Note 3/ Galaxy S6 Edge/ Galaxy S6/ iPhone 6s/ iPhone 6s Plus/LG G3/ SONY Experia T2 Ultra/ Xperia Z3+/ MOTO Nexus 6/HTC One Max/ Desire 816/One M9/ASUS Zenfone 2 etc. Package Include: 1x 3D VR Video Glasses 1x Manual Sample Question: 1. Why i can not install the phone into the device? Please refer to figure 4 and check whether your phone fit for this VR headset before purchase! The phone case will enlarge the size of original phone, please take the phone case off before you try to assemle the system. 2.The image through the device is blur. a. To protecting the lens of device away from dust and scratching during delivery, we had a protection diagphram on lens, please take it off before using. b. Please adjust the focus distance via the nob by the side of the device for regulation until you get clear image. c. Please make sure side by side image is running on your phone, normal 2D movies and apps will not lead to a 3D image in this device. d. Make sure the central line of split image on phone aglin to the split wall of VR headset, fine tuning on left and right is advised. e. Check the surface of your mobile phone and make sure it’s clean.