Best Buy: Microsoft Band Smartwatch (Large) Black Thermal Plastic 4M5-00003

4-hour heart rate monitor: Gives you a better understanding of your calorie burn, sleep patterns, and peak and resting heart rate so you can perform at your best. Run Run: Whether you're on the treadmill at the gym or outdoors in the rain or sun, you can view your run summary on your band with personalized metrics in the phone app including pace splits and heart rate. Steps tracker Steps: Set a goal and track your progress. Microsoft Band calculates the calories you've burned and the distance you've traveled each day. Built in GPS Built-in GPS: Measures the distance you've run and tracks your pace and route. Save your favorites to retrace your steps and challenge yourself later. Calorie tracking Calorie tracking: Count the calories you burn each day. View daily or weekly stats, set goals, and receive a virtual "high-five" when you reach them. Sleep tracking Sleep tracking: When activated, Microsoft Band tracks the length and quality of your sleep. Analyze the sleep charts in your app to gain insights about your slumber. Guided workouts Guided Workouts: Fun and challenging workouts from fitness partners like Gold's Gym, Shape, and Men's Fitness with exercise prompts on the band and much more in the app. Goal setting Goal setting: Challenge yourself by setting daily step and calorie goals. Microsoft Band notifies you when you meet them so that you can stay motivated. UV monitor UV monitor: Get a quick read of the UV Index while you're out and about