CA-53W and DBC-62 differences? I can't seem to find the latter in black, so I thought I'd go with the former which doesn't have the same sentimental value, but is cheap and
Casio Watch Data Bank Calculator Black CA-53W-1Z – Watches & Crystals
CA53W-1 | Black Data Bank Watch | CASIO
A Throwback to My First Watch: The Casio CA-53W Databank Calculator Watch