Polar A360 Fitness Tracker watch Colour:Black The A360's wrist-based heart rate

The A360's wrist-based heart rate monitor measures your heart rate with flashing LEDs along the underside of the watch

XL  11-12

5 hours of charging time

and Samsung Galaxy S®9

Polar A360 Fitness Tracker watch Colour:Black The A360's wrist-based heart rateMonitoring every element of your fitness fueled lifestyle, the Polar A360 Fitness Tracker is a waterproof, smart fitness watch with a sleek, elegant looking design. The A360's wrist based heart rate monitor measures your heart rate with flashing LEDs along the underside of the watch. Wrist based movement provides speed and distance stats when you're walking and running, whether on the treadmill or running through the neighborhood. Used with Polar's