I have used this watch for about 22 years.
Casio Model DB-310. Module Number 871. Bracelet is Stainless Steel Number B-859N.
It’s case is (disappointingly) chrome-plated resin and wears badly around the corners. That makes it a poor choice for daily wear.
I have fitted a new case once, ten years ago.
I bought it to use the multi-alarm features for work appointments and the 30 memories for passwords and phone numbers.
Excepting the case, I have been very happy with it’s performance.
Regards,
Clive Judd.

Welcome Clive
And congratulations for keeping a chrome plated model going for so long. I see so many of the chrome plated metal and plastic models worn to nothing. I dont think casio want you to keep their watches for more than 5 years. Its a shame the didnt make the cases in stainless steel.

regards

Adam