Seiko Cal. 4438 - 680

This Spring Drive model from 1988 features a 40mm Stainless Steel case. Powered by the 4438 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-3c84d1d3c718]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1988

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