Vintage Sandoz Monsoon sports diver automatic watch

This is my first buy this year, I thought I would quit but I could not help it.
Nice in very mint condition of the 70s/80s sporty watch, with original prism crystal.
It came without original bracelet nor strap, so I put on vintage style 19mm tropic rubber strap and it did feel good on the wrist.
Case size about 40mm