I wonder if someone could help me identify Dad's CWC for him please? Don't get excited, it's not some original issue classic and it's not worth anything, but he's had it a few years and asked me which one it was. I know nothing about them really, and I can't see it as he's miles away and C-19 means he's not accepting visitors at the mo. He doesn't have a camera phone, but he tells me the back says:

CWC

Water resistant 5ATMs

[Nato arrow]
W10/6645-99
54153175415317
4398/12

If anyone can offer anything I know he'd love to know.

Cheers,

Jim