Compatible with: Apple Watch 9/8/7 45mm  Apple Watch SE/6/5/4 44mm  Protects your device from unsightly surface scratches and absorbs shock. Ringke Fusion's ingenuity boosts the transparent frame with unique, functional details. The durable material makeup and bumper design provide maximum protection against impact.  Fusion Bumper allows full use of smartwatch functions, such as Blood Oxygen & ECG. Rigorously designed to not interfere with device charging.