Seiko Cal. 4440 - 255

This Automatic model from 1967 features a 36mm Two-Tone case. Powered by the 4440 caliber with 35j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-b12db2d98272]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1967

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