Seiko Cal. 3821 - 828

Seiko 3821-828

This Spring Drive model from 1975 features a 35mm Stainless Steel case. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-c5b6748f7e81]

Also known as: Monster, Sumo

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
35mm
Case Thickness
14.5mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
200m
Dial Color
Green
Jewels
24j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1975

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