Larger Image | Discontinued Polar M31 Heart Rate MonitorThe new M31 is similar to the old M21 but now comes with new Polar Wearlink chest strap with self change batteries. These units are ideal for the exerciser who wants to optimize their time in the gym and ensure that they are keeping within their aerobic or fat burning zones.
Features of the M31 include: -
Polar OwnZone
Polar OwnCal
Exercise Reminder - three days after the last exercise session displays a gentle text message every full hour (to get you back on the treadmill!)
Last exercise file - shows your exercise date, exercise time, time in the zone, average heart rate, fat consumption estimate, calories burned, total calories burned, and total exercise time
Calorie indicator - a bullet to indicate every consumed 100 calories.
Heart rate monitoring
Heart Rate Limits
Heart touch - a hands free way to activate the backlight
Watch, alarm, calendar, weekday indicator and stopwatch functions
Water resistant to 30 metres.
The new Polar Wearlink transmitter belt, that prevents cross-talk with other monitors. This new chest transmitter comes with self change batteries.
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