Vintage Seiko UFO Chronograph Men's Automatic Watch Ref. 6138-0011.
Runs extremely well! Serviced and maintained!
Chronograph hands all work and reset! Main / Second Chron slightly off
Keeps excellent time!
Hand-winding works!
Quickset Day / Date works!
Waterproof rating untested
Please see pictures for condition any questions please let me know 
Good luck with the auction!