Seiko Cal. 5656 - 412

This Hand-Winding model from 1970 features a 36mm Titanium case. Powered by the 5656 caliber with 25j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-68c0d0f336cf]

Also known as: Sumo, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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