Seiko Cal. 3878 - 531

Seiko 3878-531

This Quartz model from 1971 features a 43mm Hardlex-Coated Steel case. Powered by the 3878 caliber with 29j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-3e4e2da1045e]

Also known as: Tuna, Crown

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
10.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Navy
Jewels
29j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1971

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