Compatible with all current Android and iOS smartphones up to 6 inches, the Stealth VR100 headset combines both comfort and quality to maximize your VR experience. Its folding visor gives full access to the 35mm lenses, while the detachable magnetic front allows for augmented reality and keeps your device cool when necessary. The headset is fully adjustable to suit all user preferences and also benefits from wide-angle viewing and easy access to audio and charging ports.
Read more at http://www.tesco.com/direct/stealth-vr-headset-multi/608-9283.prd#BTR3EqIeOOokcQtK.99
Seen these at Park Road Loughborough Tesco, for £15 worth a punt. Appear to be £25 - £30 elsewhere and from the quick search I did, good reviews.