Track Your Wellness and Fitness Activity with Style Slim, smart activity tracker blends fashionable design with stylish metal accents and a bright, easy-to-read display Includes advanced sleep monitoring with REM sleep and can gauge blood oxygen saturation levels during the night with the wrist-based Pulse Ox sensor Fitness and health monitoring tools include wrist-based heart rate, all-day stress tracking, relaxation breathing timer, VO2 max, Body Battery™ energy monitor and more Features dedicated activity timers for walks, runs, strength training, yoga, pool swims and others Get vibration alerts for all notifications, including calls, text messages and more (text replies available for Android™ device users) Battery life keeps up with you; lasts up to 7 days (excluding Pulse Ox sleep tracking) and is safe for swimming and showering, too Accent your style while enhancing your fitness with our vÃvosmart 4 activity tracker. This slim, swim-friendly wearable comes loaded with fitness and wellness features to help you make the most of a healthier, more active lifestyle. A wrist-based Pulse Ox sensor lets you estimate blood oxygen saturation while you''re sleeping - or you can spot-check your oxygen levels anytime during the day. The device also monitors heart rate at the wrist and includes helpful tools such as all-day stress tracking, a relaxation breathing timer and VO2 max readings. Plus, Body Battery energy monitoring helps you know when you''re primed to be active or when you may need to rest. Safe for the pool or shower, vÃvosmart 4 keeps you going strong with up to 7 days of battery life - while smart notifications with vibration alerts help you stay connected on the go (when connected to a compatible smartphone). Stylish, Smart Design This slim wristband tracker, available in multiple colors, complements your style with its distinctive design, metal trim accents and bright, easy-to-read display. The display is only on when you need it. And when it''s on, it auto-adjusts to ambient light levels, so it''s visible even in bright sunlight. Whether you''re going to the office, the gym, the pool or anywhere in between, vÃvosmart 4 is the perfect fit for your lifestyle. Pulse Ox at Your Wrist The Pulse Ox sensor on vÃvosmart 4 estimates your body''s blood oxygen saturation level. Your Pulse Ox measurements are dependent upon a number of factors, including your overall health and fitness. Checking your Pulse Ox can help gauge how your body is absorbing oxygen. Turn on the feature to gauge your SpO2 overnight, or use it to take a spot measurement anytime to learn more about your body. Advanced Sleep Monitoring Sleep is important to your overall health, well-being and physical performance. To give you an idea of how you''re sleeping, vÃvosmart 4 tracks your light, deep and REM stages of sleep, along with movement throughout the night. For added insight, turn on the Pulse Ox feature to view your blood oxygen levels during your sleep. When you wake up, you can easily review and compare your sleep stats in the Garmin Connect™ Mobile app. Optimize Your Body''s Energy Body Battery energy monitoring on vÃvosmart 4 uses a combination of stress, heart rate variability (HRV), sleep and activity data to gauge your body''s energy reserves at any moment, so you can plan your day to optimize times for activity and rest. A higher number indicates you''re ready to be active, while a lower number suggests you might need to relax and rest a bit before tackling a workout. Body Battery can also help you make sense of patterns throughout your weeks, so you can understand how the past few days have influenced how you''re feeling today.