Specification: Strap material: silicone Lens Material: Corning Gorilla Glass 3 Bezel Material: anodized aluminum Case material: fiber-reinforced polymer Quick Release bands: Yes (20 mm, Industry standard) Physical size: 42.2 x 42.2 x 10.9 mm Fits wrists with a circumference of 125-190 mm Weight: 23 g (36 g with included band) Display Size: 1.2" (30.4 mm) diameter Display resolution: 390 x 390 pixels Color display: Yes Large font option: Yes Battery life: Smartwatch mode: Up to 11 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 21 days GPS-Only GNSS mode: Up to 21 hours All-Systems GNSS mode: Up to 17 hours All-Systems GNSS mode with music: Up to 8 hours See details Charging method: Garmin proprietary plug charger Memory/History: 8 GB Features: Sleep score and insights: Yes Battery life (smartwatch mode): Up to 11 days (5 days display always-on) Daily suggested workouts: Yes (walking) Pulse Ox blood oxygen: (spot-check, and optionally all-day and in sleep) Garmin Pay: Yes Music storage: Yes Display type: AMOLED (optional always-on mode) Touchscreen: Yes Water rating: Swim, 5 ATM Wheelchair mode: Yes Health and wellness features help you reach your goals. 24 Months Local Manufacturer Warranty Store in dry cool place. China