The Garmin vivosmart 4 is an activity tracker that learns your activity level and assigns a personalized daily goal. It features a slim and stylish design that blends fashion with style with metal accents and abright, easy-to-read display. Track activity, monitor your heart rate, get smart notifications, and even access detailed fitness monitoring tools such as VO2 max estimate and your fitness age. This helps gauge blood oxygen levels with its wrist-based Pulse Ox feature. It follows your progress 24/7, and it can stay on for 7 days without a battery charge. Each time you receive a text, email or call from your compatible Bluetooth device, v?vosmart 4 gently vibrates and automatically displays the information.. . The v?vosmart 4 activity tracking capabilities include steps, floors climbed, calories burned, intensity minutes and more. Move IQ™ automatically detects exercises such as walking, swimming, cycling, and elliptical training. This estimates your sleep patterns with the Advanced Sleep Monitoring feature and Body Battery uses HRV to determine your energy levels. It can also automatically start a timed walk or run activity. So you?re free to get up, get moving, and let v?vosmart 4 capture your active life. It includes v?vosmart 4 smart activity tracker, charging/data cable and manuals.. . vivosmart 4:. - Time/Date. - Automatic Daylight Saving Time. - Alarm Clock. - Timer. - Stopwatch|Sensors:. - Garmin Elevate™ Wrist Heart Rate Monitor. - Barometric Altimeter. - Accelerometer. - Ambient Light Sensor. - Pulse Ox|Bluetooth® Smart & ANT+® Connectivity|Smart Notifications|Weather|Find My Phone & Find My Watch Support|VIRB® remote|Smartphone Compatibility: iPhone®, Android™|Available In 2 Band Sizes. - Small/Medium (122-188 mm). - Large (148-215 mm). .