Had a win with fitbit for my daughter
Her second hand fitbit charge strap literally fell to bits.
The back of the fitbit has a small u shape metal (lol) clasp that holds the charger in this snapped in half so i glued it.
then the strap around the rectangle face peeled off and split.
As i bought it from a friend I thought it may be out of warranty but seems fitbit give a two year warranty from the first registration for whoever owns it.
took a week of emails to USA headquarters and a lot of confusion to finally FITBIT stating either a new replacement of the same version (and the remaining warranty that is still left) or 50% off a new product (with another 2 years warranty).
Daughter decided for a new HR with the 50% off, best thing here is straps are interchangeable.
Still cost me £35 for some reason though
bloody kids