Here we got a chance to get inside this watch and also soak the chassis and clean almost every single part. This happens when moisture reaches the inside due to the corrosion of the waterproof seal around the edges of the back seal cover. This involves disassembling only down to the crown stem and face dial. You usually only need a bobby pin to poke at the release trigger for the stem to come out freeing everything. So we can separate the movement which isn't waterproof and soak the rest. Sometimes you can't just put in a battery and it start ticking, so we might have to jump the capacitor inside using a very small tweezer like as mini jumping cables as I had to do here as well. It started working but unfortunately the crystal came off and I had to reinstall the glass crystal too which involves epoxy adhesive mixture same as pearl glue and it's done. Something like this can bring in as much as 49.99 plus tax at a retail shopping mall or 25.99 wholesale. I charged 10 because I know her and she brings in a lot of stuff. Plus the watch isn't worth 20 bucks. Took me about 40 minutes but can take as little as 15.