Before i finally ditched it, it might have been 5 years or so. But it happened much sooner, maybe 2yrs in to service. I used it daily for tasks and gaming. Since this incident i became really aware of this type of material and avoid it as best i could. Recently i got a little electronic guitar tuner made of the same material. It too melted while in storage for a few months since i got it. So there kids, this is my experience so far. Not going to say this will surely happen with yours, but be aware.