[APPLICABLE MODEL] The case only compatible with Apple Watch 40mm Series 5 Series 6 Series 4 Series SE, not compatible with other models. [HIGH-QUALITY MATERIAL] Made of shock-absorbing PC case combined with real tempered glass screen protector.The gap between the 40mm case and screen protector is made of strong glue, so you don't have to worry about too much force will cause damage to the 40mm watch case, protecting your watch from scratches and daily damage. [PRECISE CUTOUTS] Carefully designed to give you access to all control buttons, function buttons and port sensors. [EASY TO INSTALL] Step 1: Clean the screen with a wet wipe then wipe it with a dry cloth. Step 2: Peel off the film on the protective case. Step 3: First Install the crown part then Press the other side. Please note: You don't need to remove the band to install it. [KINDLY REMINDER] Using the 40mm case at the gym or pool may cause moisture to develop between the 40mm case and the watch screen, it doesn't affect the use of case, you only need to wipe the watch case with a dry cloth to restore the beginning condition.