Seiko Cal. 5645 - 256

This Hand-Winding model from 1969 features a 38mm Titanium case. Powered by the 5645 caliber with 26j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-8e92fb0c631f]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

26j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1969

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