Seiko Cal. 3877 - 633

Seiko 3877-633

This Automatic model from 1977 features a 37mm Hardlex-Coated Steel case. With its 21mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-873ce2d0cd45]

Also known as: Sportsmatic, Crown

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
11.4mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1977

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seikata-wm-873ce2d0cd45