Seiko Cal. 5688 - 278

Seiko 5688-278

This Automatic model from 1977 features a 37mm Stainless Steel case. Powered by the 5688 caliber with 29j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-abd42717a6f5]

Also known as: Monster

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
8.8mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Cream
Jewels
29j
Frequency
21,600 bph
Power Reserve
50 hours
Year
1977

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