Pulled off a Cressi-Sub 3 gauge console

[AKJammer]

Can anyone identify this? I pulled it off a Cressi-Sub console. Once the three prongs become wet, it turns on and appears functional, but for the life of me I can't figure out where it gets it's power. It doesn't appear to have any kind of battery opening. Looks to be an early dive computer, shows Depth, Dive Time, Max Depth and Temperature. Here's pictures of the front and back.

Thanks,
Jim

 

[runsongas]

looks to be a bottom timer and not a dive computer, they are glued shut iirc and only intended for use while the original battery remains active

 

[KeithG]

looks to be a bottom timer and not a dive computer, they are glued shut iirc and only intended for use while the original battery remains active

Uwatec digital timer. They were OEMd by multiple vendors. Check the section (and photos) on Uwatec Digital Timer on this page ( used to be called brass anchor)

Service List

 

[AKJammer]

GiffenK, That was it. Thanks for the Service Link. Tells me kind of what I thought, non-fixable once batteries go. It's working now, but wouldn't want to pawn it off on anybody since there's no idea how long it'll last. I think I'll keep it in my pocket of my BC as a backup for however long it ends up lasting.