MONIGE Universal 3D VR Glasses Video Viewing Box with Adjustable Pupil and Object Distance Design 3D VR Box with adjustable pupil and focal distance design, slightly adjust the position of the spherical resin lens through moving the button on the top to get a better experience of watching movies. Perfect for users with myopia problem (under 600 degrees). Ergonomic Head Belt Design with adjustable straps suitable for wearing, ensures a balanced stress condition in three points on the head, reducing 30% pressure to the eyes. A lot of ventilation holes to prevent the phone heating and fogging. With compact portable design, easy to carry. VR Glasses Protects Your Eyes, with blue coating film, the lenses of this headset can reflect the blue light from your smartphone, safeguarding your eyes while watching videos. Great Compatibility, suitable for iPhones, Android phones, Windows phones with a screen size within 4.0 - 6.0 inches for movies and games.