Lemania Speedmaster 120M

Case Diameter: 41 mm
Case Height:  14.5 mm
Case length:  47 mm
Lug Width: 22 mm
Movement: Lemania  cal. 873
manual wind chronograph, 17 jewel,
21,600 bph, 38 hour power reserve
Case material: Stainless steel
w/ screw down back
Crowns: Non screw down
Bezel: Internal bi-directional
Water resistance: 120m
Vintage: 1970s