Seiko Cal. 0736 - 670

This Spring Drive model from 1977 features a 36mm Hardlex-Coated Steel case. With its 22mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-bf98b9a61e5a]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1977

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