A bracelet was presented to me. First off, let me remark that it is so unfit for sports that it is almost funny. I gave them a try at the standard swimming pool length of 50 meters. Unfortunately, I did not count the amount of strokes. Kroll does not characterize. I used them for a run, and the heart rate tracking was comparable to that of a chest monitor. The separation is infuriating. The wristband said I ran 6.1 km when my gps said I only ran 5.2 km. In conclusion, you can use the bracelet as a lightweight watch for alerts, but you shouldn't wear it when exercising.
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