Features: 3 sizes for your option: 40mm/1.57-inch, 44mm/1.73-inch, 45mm/1.77-inch. All-round protections, prevent watch screen and four sides from scratching and rupture. Lightly fitted slim- case is your watch to create a fashion style perfect equipment. Light-weight and virtually invisible,therefore preserving the aesthetic appeal of the actual watch case, while providing sufficient protections. Suitable for Watch5/Watch4/Watch5 Pro. Specifications: Material: PC Diameter: approx 40mm/44mm/45mm, 1.57-inch/1.73-inch/1.77-inch(optional) Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Watch Bumper Cover