Seiko Cal. 0790 - 831

Seiko 0790-831

This Hand-Winding model from 1972 features a 40mm Stainless Steel case. With its 21mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-a4cb9d8c49a2]

Also known as: Monster, World Timer

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
9.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
White
Jewels
33j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1972

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