The BeachBuoy Waterproof Case is fully tested and approved by the British Standards Institute (BSI). It"s made from a durable material that offers you the ultimate in waterproof protection for your iPhone 4 iPhone 4S . Using a simple (but really effective) grip seal system, the BeachBuoy is 100% waterproof, so you can rest assured that your iPhone 4 iPhone 4S is protected from water, sand and sticky fingers. Tested and approved by the British Standards Institute after being submerged at 5 metres for an hour, the BeachBuoy Waterproof Case passed BSI IP57 / IP58 with flying colours. Featuring four eyelets and a lanyard which allow you to attach your waterproof phone case to the nearest lounger or hang it around your neck, the BeachBuoy is ideal for when you"re swimming, at the beach or on holiday, just ask our thousands of satisfied customers. Dimensions: 145 x 115mm This product is compatible with the following smartphones: iPhone - 3GS / 4 / 4S / 5 / 5S / 5C Samsung Galaxy - 2 / 3 / 4 HTC One X iPod touch - 4G / 5G All Nokia Lumia smartphones and all other similar sized smartphones and iPods.