Add mapping, music and more to your workouts with the Garmin fenix 6X Sapphire multisport GPS watch featuring a big, sunlight-readable 1.4 in. display that's 36% larger than previous fenix models. Sapphire editions add the quality and durability of a scratch-resistant sapphire lens and other premium materials Includes wrist heart rate tracking and Pulse Ox sensing blood oxygen saturation for sleep monitoring and altitude acclimation Pulse Ox is not a medical device and is not intended to diagnose or monitor any medical condition Advanced training features include PacePro™ for grade-adjusted pace guidance throughout your activity plus environmentally adjusted VO2 max and training status estimates Satellite navigation and tracking functions combine with a 3-axis compass, gyroscope and barometric altimeter to give you confidence on and off the beaten path Supports multiple global navigation satellite system (GPS, GLONASS and Galileo) to track in more challenging environments than GPS alone Comes preloaded with topo maps and ski maps for more than 2,000 worldwide ski resorts Big 1.4 in. sunlight-readable display (36% larger than previous fenix models) with bezels in stainless steel, titanium or diamond-like carbon (DLC) coating This watch eases from workout to work day with smart notifications (when paired with a compatible smartphone) to keep you connected Garmin Pay™ contactless payments (not all countries and payment networks are eligible) frees you from carrying cash or credit cards Music storage with premium streaming service (may require a premium subscription with a third-party music provider) support Battery: up to 21 days in smartwatch mode, up to 15 hrs. in GPS and music mode, up to 46 days in expedition GPS activity mode and up to 80 days in battery saver watch mode Heart-rate tracking and other data are intended to be a close estimation of your activity and metrics tracked, but may not be precisely accurate