Emarth VR Glasses 3D Headsets, with Head-mounted Headband and Adjustable Cardboard, Fits for Smartphones (iOS/ Android) with 4.0-6.0 inches Premium Quality: High Precision with SHOCKING 3D Immersive Experience; Soft leather face features more elastic, non-sweat-absorbent, comfortable and sanitary. Ergonomic head belt design ensures a balanced stress condition in three points on the head (concentrated on the forehead), reducing 30% pressure to the eyes. PD & FD Adjustment : Adjustable pupil distance (PD) and focal distance (FD). You can slightly adjust the position of the spherical resin lens through moving the button on the top of the 3D GLASSES to get a better experience of watching movies. Note: Myopia less than 600 degree is ok to use this item without wearing glasses. Wide Compatibility : Comfortably fits for smartphone (iOS & Android) with screen size within 4~6 inch ( remove the EVA mat if the phone's size is larger than 5.0 inch), Compatible with iPhone / Samsung / HTC / Huawei / Lenovo / Xiaomi / SONY, etc. Virtual Reality Apps: Check out these VR apps in Google Play store, Apple App store, and immerse in the exciting world of VR(Note : Download an APP first before using this VR device)! What you get: Emarth 3d glasses; Friendly customer service, 30-days hassle-free money back guarantee, 12 month WARRANTY.