The magnetic sensors are perfect for my new Fitbit HR. I liked the price and the long charging cable. It also comes with a short charging cable, so it never hurts to have a very short cable in case you lose the one that came with the Fitbit. I've found that I don't need to buy a "branded" charging cable (by which I mean Apple) to get the same result at a much lower price. It's not the cheapest charging cable from another brand, but this unbranded cable seemed to be of better quality than the cheapest. So I like it and you might consider buying it.
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