Seiko Cal. 0731 - 278

Seiko 0731-278

The 0731-278 is a sought-after Quartz piece from Seiko's golden era. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-bbaa174296f7]

Also known as: Sumo, Navigator

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
13.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
White
Jewels
23j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1971

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