"Temperamental in function." If you like it, try to find someone who'll a/ give an opinion, and b/ fix it for you. Without pictures of what is inside the case, opinions will be a guess at best.
1 jewel movement. BFG or EB. Value is in the unique direct read feature. Considered a throw away watch at the time (late '60s early '70s?). You won't be seeing any at the big auction houses.