Polar M400 GPS Activity Tracker Watch | Blue Color:Blue this small water backpack is

this small water backpack is perfect for keeping you hydrated and cool

and the functional versatility to carry whatever you need

Model: EMT-322-100D-01

Chest pocket fits phone with a pass through hole for your headphones to run internally

Custom anodised aluminium harware

Polar M400 GPS Activity Tracker Watch | Blue Color:Blue this small water backpack isFeaturing GPS technology, the Polar M400 Activity Tracker will take your training to the next level. Tracking your pace, distance, altitude, and calories burned it will let you know you're fitness achievement for each workout, and gently vibrate to let you know when you need to move throughout the day. Use the Polar Flow App to set goals, track your progress, and compare with your friends. [Details] Track pace, distance and altitude with the built in