Length: 120mm , diameter: 70mm.
Weight w/o battery: ..gram.

The outer body is made in two halves and has 6 laser "eyes" divided around it.
On the side it has a small speaker opening.
The battery is "penlight"-shape, but normal batteries appear to be drained in seconds...
Plastic fuze body with mousetrap mechanism.
Unmarked green painted spoon.
Instead of hitting a primer, the firing pin hits (and then holds) an electronic switch.

Check the page on the Claymore laser mine. I purchased the two together.
British manufactured for the army combat training gear.
Can't find much info on these other then a patent on the web without pics.
Let me know if you can add some info.