How to install: Find the plastic tab, insert the 4 corners to the holes on the back of the case, push it upwards until you hear a "clicked" voice. After that, screw it on the bike. How to release it: To release the case, find the plastic arm/tab on the underside, pull it toward the ground and hold it there while you pull the case upward and off the mount. Description: eBuymore Bike Kit is rated IPX8 Waterproof Submersible, the toughest protection rating in the industry. In addition to being 100% rainproof, snowproof, dustproof, dirtproof and sweat proof, it can also be submersed in water 6.6 feet (2 meters) for up to 30 minutes! The most advanced Heavy-Duty waterproof, shockproof, dirt proof, Sand proof, Dust proof , Compatiable with 5.5 to 6.3 inch Smartphone, it may not fit if the phone under 6.5 inch. Bicycle Mount available. It is suitable for motorcycle, rode bikes, mountain bikes with handlebars. Enjoy full access to all your favorite smartphone controls anywhere bike takes you. 100% touch-screen operable, with full access to all buttons and controls including cameras. Note : There are two pads in the bag, please do not throw it away, you can use it if the case is big. Note : There's no There's no Fingerprint recognition function for this waterproof pouch.