A370 Fitness Tracker (Medium/Large, Black)

Get personalized training guidance, activity tracking, and wrist-based heart rate data with the black A370 Fitness Tracker from Polar. The A370 tracks all your vital activity data, including your steps, calories burned, sleep quality, and more. Using your phone's GPS, the A370 can track your running speed, distance, and running route. However, if you don't like running with your phone, the A370 can also measure your distance and speed based on wrist movement alone. The wrist-based heart rate monitor tracks your heart rate 24/7, so you can have a better understanding of your heart health, and customize workouts to help reach your fitness goals.

In addition to activity tracking and fitness-related functionality, the A370 offers several connected features, including text message alerts, social media updates, and appointment reminders. The A370 supports Bluetooth functionality and its smart features work with any smartphone running a minimum of iOS 7 or Android 4.3. It's rated to be water resistant up to 30 m (98'), so it's safe to take in the shower or out into the rain. The A370 is powered by a rechargeable 110 mAh battery that's designed to last up to 4 days on a full charge.