One month with Garmin Fenix 3. Is it the ultimate GPS watch 。Garmin Fenix 3 HR Smartwatch 43mm Omni-directional stainless steel EXO™ antenna, with GPS/GLONASS satellite reception, has the ability to track in more challenging environments than GPS alone Elevate™ wrist heart rate technology¹ measures heart rate at the wrist Activity and sleep tracking: Sensors monitor your steps during day, with automatic goals assigned based on your activity level, and a move bar displayed to motivate you after periods of inactivity. At night, movements are tracked to determine sleep quality. Fitness training features like advanced running dynamics with vertical oscillation and vertical ratio, VO2 max, recovery advisor and more¹ 1.2-inch sunlight-readable Garmin Chroma Display™ with high-strength domed sapphire lens Outdoor navigation features like 3-axis compass, altimeter and barometer and TracBack® feature Battery life: up to 2 weeks in smartwatch mode (depending on settings), up to 16 hours in GPS mode or up to 40 hours in UltraTrac™ battery saver mode fēnix 3 HR multisport training GPS watch is rugged, capable and smart. With feature sets for fitness training plus feature sets for outdoor navigation, fēnix 3 HR is ready for any training activity and competition. Access to the Connect IQTM platform allows customization of watch faces and data fields and provides downloadable widgets and apps. Good Pre-Owned Condition. Has Been Re-Set To Factory settings. Watch & OEM Charger, extra rubber band, instruction manual and box.