This device uses steps and calories to allocate your Active Dayz™
The Polar M400 is a GPS running watch and daily fitness tracker. The Polar M400’s built-in GPS keeps track of your pace, distance and altitude. Safely explore new routes with the “Back to Start” feature. Track your steps, activity, sleep and calories. Running cadence from the wrist helps you improve your running. See your notification from your phone on the screen of your M400. Sync with Bluetooth to Polar Flow.