Size: 41 mm (1.32 inches) Display resolution: 466 x 466 pixels Connection type: Bluetooth 5.2, NFC OS: Android 8.0 or higher, iOS 13.0 or higher Main control button (rotating crown) and side control button Built-in speaker and microphone Water resistance: Up to 50 m Wrist Size: 120- 190 mm Strap Material: Stainless Steel, Leather, Fluorelastomer, Gold Milano Material: Stainless Steel Battery Capacity: Up to 7 days of light use Charging type: wireless Dimensions: 41.3 × 41.3 × 9.8 mm Weight: 37 g (without strap)