SAMSUNG Galaxy Watch 5 40mm Bluetooth Smartwatch w/Body, Health, Fitness and Sleep Tracker, Improved Battery, Sapphire Crystal Glass, Enhanced GPS Tracking, US Version ADVANCED SLEEP COACHING: Manage your overall sleep quality with an advanced sleep tracker that detects and analyzes sleep stages while you rest; Plus, Advanced Sleep Coaching helps you develop better sleep habits by analyzing your sleep patterns.Supported Application:Fitness Tracker,Blood Pressure Monitor,Multisport Tracker,Time Display,GPS. Connectivity technology:Bluetooth. Wireless comm standard:Bluetooth,802_11_AGNAC BODY COMPOSITION ANALYSIS (BIA): Galaxy Watch5 provides body composition data right on your wrist; On your own schedule, you can now get readings on body fat, skeletal muscle, body water, basal metabolic rate and Body Mass Index (BMI) IMPROVED SENSOR ACCURACY: Stay up to date on your wellness; Get an accurate heart rate thanks to an improved, curved Samsung BioActive Sensor that gets closer to your skin AUTO WORKOUT TRACKING: Make the most of every adventure with Auto Workout Tracking ? from running to rowing to swimming ? automatically in just minutes, and manually tracking more than 90 exercises, including complex activities like HIIT IMPROVED BATTERY GALAXY CONNECTED EXPERIENCE: Meet the watch that goes as long as you do; Galaxy Watch5?s improved battery keeps up with your busiest day. Do more with synced Galaxy devices that work in perfect harmony SAPPHIRE CRYSTAL GLASS: Galaxy Watch5 can stand the test of the hardest days; Its sapphire crystal glass face is 1.6x stronger, resisting the problems that come with life?s daily routines ENHANCED GPS: Get out there; Explore the great outdoors; Now you can wander all you want and still know where you are; Galaxy Watch5 features enhanced GPS with voice navigation right on your wrist