Features GUILDFORD comes from Xiaomi Eco-chain. Mobile waterproof dustproof phone case. Pass the underwater 10 hours waterproof test. 220*105*20mm, for 160*80mm phones (L x W) For most 4.0, 5.2, 5.5, 5.7, 5.8-inch phones. with a phone string, can get round your neck, free your hands. 4-layers sealed. High temperature resistance. Can be operated Directly through the high transparent TPU film. Good choice when go to the beach shore or swimming.