Casio Blue Thunder A201
I have one of these watches that I have had from new, It's from the early 80's.
I have been told this watch is quite rare, I do not have to original strap but it is in fully working order.
A value would be of interest on the watch, it has normal ware marks from every day use!
It's serial number starts with the letter "B" so it must be a early one.
Yep I have reset the date now!