Long live the first TritiLED!
Earlier this week, I woke up in the middle of the night and missed the familiar green glow; at the time, I figured that the thing had simply fallen off the nightstand. When I got up this morning, I noticed it there, lifeless.
Checking my notes, I stopped fooling with this one and just let it run on 20150622. Assuming I caught it on that first night, it ran for 421 days on a CR2032 battery.
Of course, I just popped in another battery this morning, good for another year or more.