1. Powerful Features: PC HD transparent back screen, front explosion-proof optical transparent glass, wear resistance, scratch resistance, good light transmittance. PC plastic shell, durable, no deformation at 40 meters depth. 2. Applicable for Underwater Use: 40m/131.2ft deep waterproof, suitable for iPhone 12 and iPhone 12 Pro smartphone, can be used for diving, snorkeling and other underwater photography sports, record the wonderful underwater world. Humanized confirmation button dial design, increase the button area, let you use more conveniently. 3. Bluetooth Control: Use Bluetooth to move the cursor to control, support taking photos, video, viewing, deleting, can complete most of the mobile phone functions. O-silicone ring, safety lock, strong sealing, prevent air leakage. 4. Support for External Devices: The bottom has 1/4in stainless steel screw holes for easy fixing to the diving bracket lamp arm. With cold shoe mount for easy installation of fill light. Also has external 67mm thread interface, can be connected to 67mm diameter filter, lens. 5. Protection Function: The waterproof case has a protective pad inside to protect the phone from scratches. With vacuum interface, so that the camera's interior is in a vacuum state, there will be no fog in the water.