Seiko Cal. 6616 - 396

This Spring Drive model from 1967 features a 42mm Titanium case. Powered by the 6616 caliber with 27j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-f6305c069487]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1967

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