Seiko Cal. 3861 - 127

Seiko 3861-127

This Hand-Winding model from 1974 features a 35mm PVD Black case. Powered by the 3861 caliber with 33j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-f212747fbdab]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
35mm
Case Thickness
10.8mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1974

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