Seiko Cal. 3881 - 603

Seiko 3881-603

This Hand-Winding model from 1978 features a 36mm PVD Black case. Powered by the 3881 caliber with 27j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-50889be22f2d]

Also known as: Sumo, Silverwave

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
36mm
Case Thickness
8.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Cream
Jewels
27j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1978

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