I also had one of the original G-shocks as a kid, back in the 80's. I think I got it for my 10th birthday in 1988.
I've been through 4-5 bands and 2 batteries. It sat in a drawer for about 5+ years recently, forgotten, until I needed a digital watch. I pulled it out and found it had a dead battery and went to WalMart to get it replaced, but it was finally a dead soldier.
The Lorus right next to it in the same sock drawer also had a broken band and a dead battery, but it revived okay. The light no longer works on the Lorus, though. That one is probably 15+ years old.
That "Riseman" model looks pretty cool. I'd like to have one of those.