IPX8 Certification：Fully submersible and waterproof, the waterproof cellphone case offers protection up to 98 feet. Note: Please use a dry paper towel before placing it in a waterproof case for waterproof testing. Touch-Sensitive and Transparent Windows: Ultra-thin PVC material provides sensitive touch, perfectly unlock the HOME button (including iPhone X/8/8 Plus, But not to Touch ID fingerprints). Transparent window allows you to take clear underwater Picture or video, Note: The phone may suffer hydraulic pressure under a certain depth of water, which will affect the operation of the touch screen. In this case, please press VOLUME BUTTONS to take photos. Safe and Novel Fluorescence Design: Onisall replaces the waterproof case with a detachable hook instead of a string. It is equipped with armband that is more securely placed on the arm and protects the items from sinking into the water. In addition, the fluorescent design will glow at night that you don't worry about losing your waterproof case, suitable for swimming, diving, running, fitness, etc.