Product Specifications:GeneralLens Material - Corning Gorilla Glass DxBezel Material - Stainless SteelCase Material - Fiber-Reinforced Polymer With Metal Rear CoverQuickfit Watch Band Compatible - Included (20 Mm)Strap Material - SiliconePhysical Size - 42 X 42 X 14.1 MmFits Wrists Circumference - 108-182 mmTouchscreen - YesColor Display - YesDisplay Size - 1.2” (30.4 mm) diameterDisplay Resolution - 240 x 240 pixelsDisplay Type - sunlight-visible transflective memory-in-pixel (MIP)Weight - 63 G (Case Only: 47 G)Water Rating - 10 ATMMemory/History - 16 GBBATTERY LIFESmartwatch: Up to 11 daysBattery Saver Watch Mode: Up to 38 daysGPS Only: Up to 37 hoursAll Satellite Systems: Up to 26 hoursAll Satellite Systems and Music: Up to 7 hoursMax Battery GPS: Up to 90 hoursExpedition GPS: Up to 26 daysHealth MonitoringWrist-Based Heart Rate (Constant Every Second) - YesDaily Resting Heart Rate - YesAbnormal Heart Rate Alerts - Yes (high and low)Respiration Rate (24X7) - YesPulse Ox Blood Oxygen Saturation - Yes (spot-check and optional all-day acclimation and in sleep)Fitness Age - Yes (in app)Body Battery Energy Monitor - YesAll-Day Stress - YesRelaxation Reminders - YesRelaxation Breathing Timer - YesSleep - Yes (advanced)Sleep Score And Insights - YesHydration - Yes (in Garmin Connect and optional Connect IQ widget)