Seiko Cal. 3831 - 285

Seiko 3831-285

This Hand-Winding model from 1966 features a 39mm Two-Tone case. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-a04017b64361]

Also known as: World Timer

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
39mm
Case Thickness
9.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Green
Jewels
24j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1966

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seikata-wm-a04017b64361