I bought this for my Fitbit Flex 2 to wear as a pedometer as wearing the silicone strap gives me nervous breakdowns. The magnet is really strong, but I'm not sure if it matters how the Fitbit is placed in it. I'm worried if I put the charging side on a magnet it will ruin it. The holder didn't come with instructions so hopefully they tested it and it didn't. I like that this holder is small and discreet when worn. Except I keep leaving it on my workout clothes afterwards, but I'll get used to that. I gave this holder 4 stars because I've tried wearing it to sleep and it hasn't worked properly yet. I tried putting it on my nightgown as shown in the picture but the retainer came loose at night, then I tried a different part of the nightgown and although it stayed there I didn't get a reading the next morning . . I'll try a few more times but I guess I need to wear the bracelet or not to get sleep results.
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