It's a good idea but would require a new band attachment. The prospect of that seems to really trigger a lot of people around here.Put the battery in the band please, and make it easy and fast to switch to a fully charged band. We could thus wear the watch 24/7, except a couple minutes to switch bands (only once per day if a 24+ hour battery). I suppose you'd still need a tiny battery in the watch to keep things alive when switching bands.