Here’s a vintage Seiko 6458 quartz diver that I saw at K2 recently. This is a mid size diver with Kanji day display.This is a Japan model and it’s ex-owner must have shipped it into Singapore.
Yeoman's Weblog
Tough times don't last. Tough watches do.
Yeoman's Weblog 
I came across a shop at Golden Landmark selling vintage Seiko. I think its on the third floor.
Thanks for sharing.
It’s 30 years old and looks better than most of us who are 30! I have two JDM versions of the slightly larger 7548 and they are great watches.
30 years and still strong. These divers are really built to last.