Does not need charging (just replace battery every 6 months or so). It's waterproof. It's simple to use.

Replacement straps are not readily available.

It measures steps and distance

I don't believe the blood pressure which has never changed. The strap holes over time become enlarged and the first one I bought fell off and I lost it.

Easy to use and good vfm

Would be good if there was a more dressy band to slot it in to