Smart Activity Tracker with Wrist-based Heart Rate and GPS Work out inside, or use built-in GPS to accurately track activities outsideIncludes fitness monitoring tools such as VO2 max and fitness age estimatesAll-day stress tracking helps you stay in touch with your body’s response to potential stressorsFeatures always-on color Garmin Chroma Display™ and slim profileGet connected features² such as smart notifications, LiveTrack and moreBattery life³: up to 7 days in smartwatch mode; 8 hours in GPS mode