Features: 1. Made of ABS, durable to use. 2. 130ft/ 40m maximum waterproof depth for underwater photography. 3. Adopt a seamless and completely closed process to prevent scratches and dirt. 4. Clear image view for easy underwater control. 5. The camera position uses 6 screws to fix the metal to make the camera double protected. 6. The 32mm adapter ring can be connected to the lens filter, telescope, etc., enriching the lens function of the mobile phone. Specification: Model: PU9201 ( for HUAWEIP20 ) PU9202 ( for HUAWEI P20 Pro ) Product Type: Mobile Dive Shell Material: PC, ABS Product Size: about 19* 9. 5* 3. 8cm/ 7. 48* 3. 74* 1. 5in ( PU9202 ) Product Weight: about 565g/ 19. 93oz ( Pu9202 ) Maximum Depth: 40m Product color: black ( P20 PRO ), transparent color ( P 20 ) Product features: waterproof, shockproof, antifreeze, dustproof, scratch resistant, wear resistant Package List: 1* Diving Shell 1* Silicone Lanyard 1* Cleaning Cloth 1* Instruction Manual 1* Rubber Ring