Seiko Cal. 3883 - 621

Seiko 3883-621

This Spring Drive model from 1986 features a 39mm PVD Black case. Powered by the 3883 caliber with 30j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-cb7c6387246a]

Also known as: Sumo

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
39mm
Case Thickness
12.0mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
160m
Dial Color
Cream
Jewels
30j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1986

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