The Nike Imara is a nice small size. Unfortunately, it is not coded. It will not obtain an accurate heart rate in a gym or around any other electronic interference. If you are only using the Imara on a bike, then it would work great. However, if you have a cordless computer or like to spin inside (even near a home computer with a router), this won't work well.
I have a Polar F6. I like it a lot, and it is not terribly large on my wrist. I have the pink model.



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