Seiko Cal. 3871 - 816

Seiko 3871-816

This Kinetic model from 1974 features a 34mm Hardlex-Coated Steel case. Powered by the 3871 caliber with 22j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-bb5639a83f9a]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Black
Jewels
22j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1974

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