Seiko Cal. 3817 - 530

Seiko 3817-530

This Spring Drive model from 1972 features a 45mm Two-Tone case. With its 18mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-d8636c9bed34]

Also known as: Monster, World Timer

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
45mm
Case Thickness
14.3mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Silver
Jewels
24j
Frequency
28,800 bph
Power Reserve
43 hours
Year
1972

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