Strengths: The heart rate monitor works perfectly well and is a very useful device. The GPS system works well in open spaces. Extremely easy to use and get the hang of.
Weaknesses: When running near telephone lines, power lines, near rows of dense trees or tall buildings, when running on very cloudy days, then you can lose the signal for the gps system.
Overall: Overall, a reasonably good product, but I feel it is a bit overpriced, and the gps could be made to be more reliable.
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