Go to the Modern LEDs photos at
www.ledwatches.net You will find that Fossil,Atomix, Motorola(don't know if there is a picture, I just have the watch

) have the clear or at least trnslucent crystals where you can see the circuit. And of course,
www.ledwatchstop.com which advertises in the sidebar of that page carries the "01"(brand) BINARY which also has a translucent crystal. I have two of the clear top Synchronars but you'd have to pry them from my frozen dead fingers....
A few others could have had a clear crystal since they were using LEDs that were encased Under red magnifiers - I have a "Certia" like that. Most modules aren't that interesting on the front side since the components are on the bach/batterty side. The Fossil seem to be the exception - I wonder if they intentionally did it that way to make it more interesting.

Probably so.
http://www.retroleds.com -
Sales of vintage LED, LCD, analog watches,
parts and gadgets -
repair tutorials & tips
Nov. 2022 - back in business!! BItter divorce is in home stretch, come grabs some great deals, I had to open the safe . . . damn attorneys. piss.