
- BASE: GA-100A-9A

- MOD: Hydro with sewing machine oil
- new all black bezel and strap
- MOD: new yellow/white engravings.
OIL FILLED (WITH AIR BUBBLE FOR OIL EXPANSION)

FINISHED
Yes, my recommendation based on experience is using sewing machine oil and quality quartz watches with either digital display or hands without seconds (the seconds hand drags to much)
It's supposed to achieve that too. The oil takes all the empty space available so water can't get in.