【Survival Whistle】Tmily underwater case is designed with lifesaving whistle, which can send a singal for help when drowning. Fluorescent design helps to find your phone in the dark easily. 【IPX8 Certificated Waterproof】 The full clear transparent window on both front and back sides with sensitive touch-screen, helps to take pictures, check emails and browse news when enjoying water activities. 【Portable Pocket with Lanyard】This waterproof pouch can be your portable pockect packed into credit cards, cashes, passport, etc. Attached lanyard is convenient for outdoor use.