Samsung Galaxy Watch 5 40mm Bluetooth Smartwatch w/Body, Health, Fitness and Sleep Tracker, Improved Battery, Sapphire Crystal Glass, Enhanced GPS Tracking, US Version, Gray (Renewed)

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
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