It does exactly what it says it will do and it does so simply and effectively. The Polar software really works well - but could be better, Also, there is a discrepancy between the heart rate reading of the software and on my polar heart rate watch in terms of calorie burn. The iPhone/iPad software shows that I burn about 16 calories an hour more than does my watch. Minor problem, but I thought I'd mention it.
I use it on my bike rides and it works wonderfully, telling me how far I am travelling and how fast I have ridden as well as giving me audio announcements every 10 minutes of average speed. Its good fun.
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