If you are a construction worker, crew, travelers, outdoor sports enthusiasts, field workers, explorers, oil workers, and hope the expensive mobile phone can be perfectly protected, it is worth you to own.</b> Special Note: 1.The phone case is designed for iphone 7/8 plus. Please removing previously installed screen protectors before installation, it affects the sensibility of screen and causes the case not be fully sealed. 2.Please make sure removing the previously installed screen protectors, it will cause muffles voice. 3.Due to waterproof performance requirements, the phone call voice would be a little bit lower. It is recommended to use the maximum volume adjustment, Bluetooth device or headphone to get better sound. 4.Please do Water Test according to the User Manual before placing phone in the case or before you take it to swimming pool, beach or anywhere has water. 5.Ultra Heavy Duty, about 8.3oz, so it ultra shock resistant and anti-drop when dropped, protect your iphone 7/8 plus perfectly. 6.Waterproof: Please follow manual to install. 7.Charge: Please insert the charging cable completely (for the waterproof design, the charging port is tight and needs to be forced). 8.Sound: Be care do not press the mute button, up and down button, otherwise, you can't hear the sound.</b> Product Features: 1.Complete 360° protecting your phone ( Water/ Dust / Shock Proof), Enjoy your time on the Beach, Climbing, Camping, Swimming..... 2.Built-in screen cover for touchscreen defense, tough, all-protective designed; 3.Easy access to controls, connectors, speaker and camera and allows you to charge your device without removing the bumper;</b> What's in the box: 1 x Waterproof Case compatible for iphone 7/8 plus; 1 x Cleaning Cloth; 1 x Hand strap; 1 x User Manual(MUST READ); 1 x Screwdriver; 3 x Screws（spare）