I guess it depends on how you treat it, how often it is used & how many times it been charged. The battery may need to be replaced, but I can't think of a reason that it wouldn't last 10 years or more, but you probably would have traded up for something better. In my house, a week is pushing it, but they were neverdesigned to be a Frisbee
Electronics can last for many, many years if properly taken care of. The LED touchscreen however, does have a lifespan. You could expect anywhere from 4-25 years. The newer ones claim to last up to 35 million touches, or 100,000 hours of use.