1. There is no touch screen back cover. It is difficult to set camera parameters after installation. You need to take out the camera to operate. After installing the touch screen back cover, you can still operate the camera without removing it even after the camera is installed. 2. The optical design wraps the lens and increases protection for the waterproof lens, making it easier to focus and restore the clarity of the bare metal lens. 3. Heavy sealing, factory pressure tested. 4. Why use an anti-fog insert? In diving, swimming, skiing, surfing, and mountaineering, sports cameras use waterproof cases. There is a temperature difference between the inside and outside, and condensation can form inside the waterproof case. An anti-fog insert helps absorb moisture and prevents the lens from fogging. (Can be reused after drying.) 5. There is no touch screen back cover. To adjust camera settings, you must open the waterproof housing. When diving or swimming, this makes operation inconvenient. Frequent opening may lead to moisture entering the housing, causing fogging and unclear footage. Applicable Models: for GoPro Max Material: PC + 316 stainless steel + tempered glass Type: for GoPro Max Waterproof Case Color: As shown Package Contents: 1 set of camera waterproof case (including screw base and anti-fog insert) Only the above package content is included; other items are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.