Fitbit luxe (Cambridge CB4)

Lady size.
Its coming towards the end of it's life.
It needs charging daily or more. (Chargers provided.)
There's a fitbit app. so you can see the data that is not necessarily visible on the screen at that time. The app keeps data for months.
It counts steps, sleep etc. All the usual things.
Half way through the day the screen stops working until you plug it in for a few minutes. Maybe several times a day.
It's still a step counter... etc
You could use it to count steps, distance etc from exercise.
I don't know how many hours the data collection lasts. Certainly hours after screen goes black.
Probably will die completely in a few months.
It cannot be fixed because it only needs a battery and you can't put a new battery in.
It's still collecting data but you can't see it all the time without the app.
I would recommend not leaving it conpletely uncharged, to extend it's life.