Seiko Cal. 6311 - 505

Seiko 6311-505

This Hand-Winding model from 1968 features a 37mm Titanium case. With its 21mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-c755a03ac64c]

Also known as: Bullhead

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
15.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Burgundy
Jewels
19j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1968

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seikata-wm-c755a03ac64c