1. Airtight seal 100% completely sealed you can freely take pictures underwater; 2. Can be directly operate the device after storage into the bag; 3. Water resistant dust-proof sand and snow proof provides best protection for your device; 4. UV resistance protects product paint to prevent plastic / rubber part hardening cracking; IPX8 water resistant; For normally phone calls answering mail receiving reading E-book playing game etc; Please check the waterproof bag if there is damaged part before use; After used check the mouth and seal to avoid damage of shock and scratches during water sports; Avoid high temperature and long time soak into water.