Seiko Cal. 4446 - 831

This Spring Drive model from 1968 features a 36mm Two-Tone case. Powered by the 4446 caliber with 27j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-3c47826953a0]

Also known as: Tuna, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1968

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