More than just GPS; M400 combines the best 24/7 activity and GPS features and provides you with helpful data for lifestyle and training improvement
Tracks your pace, distance and altitude with integrated GPS; Get guidance to beat your personal best; Explore new routes with Back to Start feature
24/7 activity tracking - displays steps, calories and daily goal; Inactivity alert motivates you to move; Plus tracks sleep time and quality
Plan, sync and share your training with Polar Flow app and web service; Plus, play and share video highlights of your workout journeys with Relive; Rechargeable battery