Featuring 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 GPS
• Follow your 24/7 activity, calories and steps
• Plan, sync and share your training with Polar Flow mobile app and web service
• Set targets to beat your personal best
• Explore new routes and find your way back home with Back to Start
• Track your total calorie intake and expenditure by connecting with the MyFitnessPal app
• Backlight
• Battery life: Up to 8h training time (when both GPS and HR in use), 24 days in time mode with daily activity monitoring
• Rechargeable battery with standard micro-USB cable
• Firmware update
• Date and weekday indicator
• Button lock
• Time of day (12/24h) with alarm and snooze
• Water resistant – 30m