Seiko Cal. 6316 - 891

This Hand-Winding model from 1968 features a 35mm Titanium case. Powered by the 6316 caliber with 26j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-1cb49b8a650f]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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