Longines Ultra-Chron

Case Diameter: 41mm
Case Height: 12 mm
Case length: 42 mm
Lug Width: 22 mm
Movement: Longines 431 automatic,
25j, 36.000 bph, 39 hr power reserve,
date change 12-9-12.
Case material: Stainless steel
Crown: Non-screw down
Bezel: Uni-directional indexed w/ 60
clicks
Water resistance: Not rated
Vintage: '60s