works good until you need to change the battery and then polar is extremely disappointing to work with. new timex models have user changeable battery.

POLAR said they would replace my battery on an old HRM for under $20 when i aksed and said i didnt want to pay to send it in if they were charging too much. They sent me a bill for over $70 with no explanation of why it was more to change the battery and no claim of other service problem (it was working fine before the battery died) so $70 to change the battery plus over $40 for a new transmitter belt

Polar doesnt stand behind their products. When its time to change the battery be prepared for ugly surprises.

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try a timex.

Lots of features great for Heart Rate Training. Can download 120 points of heart rate data to computer in less than 1 minute (need a sound card), has program for interval training, can also define custom workouts based on heart limits and timers.

Can't export data to Excel. I'm not overly impressed with the software that comes with it, but I'm only going to use it to store and recall my Heart Rate Graphs anyways, and to set up limits and training programs.

Excellent value for a watch that you can download your heart rate profile to a computer. Great for determining threshold heart rate and for analyzing races (Oh! so THAT's why I bonked!)

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Polar A5

-Looks
-User interface
-Download last session to computer
-Intervalpossibility
-Own code
-VO2 max simulation
-Fitness level

No typical bicycle functions. But the S510, 710, 710i and 720i have so I should have spent more bucks.. Every exercise it produces some misreadings. It's not possible to determine your average speed (I use a Sigma Targa bike computer and use its data) the Polar calculates the average by deviding the distance you gave in by its own exercisetime

This product is ok. It looks nice and when you take some time you'll see that it can help you very good during training. I'm always training in specific zones. My experience is that this is easier while running than biking (although on a roadbike it's not as difficult as on the MTB) I wish I had bought the 710. It records also your distance, speed etc. I also practise running and there the Polar is really helping me out. I run intervals and my physical condition is improving dramatically.

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First heartrate monitor

Many functions, very atractive design.

Doesn't come with an handlebar adapter, it's a bit fragile

I've never used an HRM before, so I was not familiar with all the functions. The side buttons cracked the first time I took it to a bike ride, but were quickly replaced at the store. The computer program allows downloading of your training data and makes excellente graphics.

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none

Lots of features. Ability to download heart rate data to PC for analysis to aid training. Nice looking.

Had to actually read the manual to figure out how to work some of the features.

Very nice HRM. Once I figured out how to work all the features (I'm one of those who hates reading the manual) I haven't had any problems. The software that comes with the unit is the "Lite" version so I'm planning on upgrading to the full featured version. They also sell 'training packs' that will coach you in preparing for Marathons, Triathalons, etc.

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An early Model Polar HRM.