The Polar AXN 300 sports watch shows your current altitude reading with graphical trend curve and your vertical progress. Keep track of your laps with the Slope counter and check your pace down the mountain or up the rock with the Vertical speed feature. The barometer allows you to track the changing weather. The Polar AXN 300 comes with the Polar T31 coded heart rate transmitter. The OwnIndex feature tests your fitness level, so you can set a baseline and track your improvements. The OwnCal feature monitors your energy expenditure (calories) so you know when to refuel.

• Wireless ECG accurate heart rate (displayed as beats per minute, % of max heart rate, as graphical trend)
• Polar OwnCal
• Polar Fitness Test
• Polar OwnCode
• 1 set of Target Zone limits with visual and audible alarm
• Independent count down / count up timer
• Maximum and average heart rate of total exercise
• Exercise date
• Altitude and ascent
• Altitude with graphical trend
• Vertical speed (ascent and descent rate) - average and maximum
• Slope counter
• Cumulative ascent and descent
• Sea level pressure with graphical trend
• Absolute barometric pressure
• Temperature
• Recording Features
  • Uplink settings upload from Polar web site or software to wrist unit
  • 80 exercise files
  • Total exercise time, time in target zone, target zone limits
  • Average heart rate of total exercise
  • Last OwnIndex
  • Calorie expenditure and fat percentage
  • 1 week auto logbook with circular memory
  • Seasons totals
• Water resistant to 100 meters
• Back light
• Heart touch - button free operation of wrist unit
• Time of day (12/24 hour) with 3 daily alarms
• Dual time zone
• Date and weekday indicator
• Stopwatch
• Low battery indicator
• Countdown timer
• 5 reminders (visual / alarm)
• User replaceable battery
• Comes with Polar T31 coded transmitter (also compatible with WearLink transmitter)