Compatibility This case/band compatible apple watch ultra(49mm) 8 7 6 5 4 3 44mm 45mm 40mm 41mm,the replacement band can be shortened or extended using the included link removal tool to fit your wrist perfectly.Only chains marked with arrows are removable. Please follow the correct steps to remove the band to avoid damage.(APPLE WATCH NOT INCLUDED) Metal Case Protection The one-piece band with case is made of high-quality 316 steel, which is strong, shock-proof and drop-proof. Enhanced comfort and durability, this band is skin-friendly and delicate. With a delicate steel connector, it won`t let your watch fall off easily. The stainless steel metal case bumper and tpu bumper lock your watch precisely and securely, protecting your iWatch from scratches. Charging Directly iWatch frame protection design (without bottom cover), it is convenient for you to charge directly without disassembling the case, suitable for any charging device. Precise hole design for easy access to all buttons.