The Microsoft Band 2 MU5-00001 Activity Tracker track your heart rate and daily activities, like exercise, steps, calories burned, and sleep quality, while the notifications you care about most are available at a glance. It features 11 sensors, including a GPS, UV monitor, and barometer. And with the power of Microsoft Health, you have the tools you need to reach your goals. Reach your fitness goals with custom tracking whether you're running, biking, golfing, or working out. And Guided Workouts provide more variety with exercise prompts right on your band. Stay connected at a glance with email, text, calendar, call alerts, and social updates. Take notes and set reminders with your voice using Cortana.