hi. i am lucky. got it from carousell.

should be quite hard to find this model. sbcm023 have automatic younger brothers which looked similar. skx013 (38mm) & skx007 (42mm). they have day date complication though.
it's cheaper alternative to grand seiko 9F series. GS quartz divers are 42mm anyway.
a recent review from
http://www.thewatchblog.co.uk/seiko-sbcm023-review/
Seiko SBCM023 Pros:
High-quality stainless steel design
Very good luminous LumiBrite hands and markers to make it easier to read in dim lit conditions
Features an extremely accurate 8F35 quartz movement
The perpetual calendar automatically adjusts for the varying amount of days in each month. Saving you that annoying altering.
Hardlex crystal offers a fairly good level of protection from scratching and knocks.
The battery has a life of up to 10 years which is superb
The lugs are 20mm drilled which means you can change straps around
200m divers water resistance that qualifies for ISO6245 rating
Screw-down crown and case back as you would expect for a highly rated divers watch
Diver enhancement strap to easily enlarge strap to fit around a wetsuit
Seiko SBCM023 Cons:
It would have been nicer if they had featured sapphire glass instead of Hardlex
Due to it being discontinued it’s fairly hard to find them at the moment
happy hunting if you are searching for 1!