The use of simple structural design allows you to install it easily. Your watch can be well protected as it features anti-fall and anti-scratch. It is made of electroplate and TPU material, which is soft, lightweight and comfortable. The diameter of the product is 45mm/40mm. Protective case with 45mm diameter is compatible for Garmin Vivoactive 4/Venu 2. And the protective case with 40mm diameter is compatible for Garmin Vivoactive 4S/Venu 2S. Item Name: Protective Case Material: TPU,Electroplate Color: Black, Silver Color, Golden Color, Pink, Rose Golden, Transparent Compatible Models: 45mm: for Garmin Vivoactive 4/Venu 2 40mm: for Garmin Vivoactive 4S/Venu 2S Features: Anti-scratch, Full Coverage, Easy Installation Size Details: Diameter: 4.5cm/1.77" (Approx.) Diameter: 4cm/1.57" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Protective Case (Watch Not Included)