Posted: 12/12/2014 at 18:26
I had a 405 for 3 years when it steamed up a bit and then was behaving erratically. Spoke to Garmin explaining I'd only ever used it for running. They immediately sent me another one which was a refurb. This had a problem after only a couple of days. They then sent me a brand new boxed one with HRM; no charge. I've since bought a 410 as my wife was started using the 405. I've had the 410 for a couple of years now with no issues and my 15 year old son is now using the 405 on which the strap parted company with the watch; breaking right through the joining pin. I super glued it and it's been fine for about 3 weeks now.
HR monitors have not been great after battery changes, especially the latest ones with ridiculously small screws which need taking out. Both times I've had my HR monitor replaced free of charge. You have to speak nicely with them and they're very helpful.
I suppose I'll eventually have to buy a later model but do feel I've had my money's worth out of the 2 units I've paid for over a period of about 6-7 years.