Seiko Cal. 3888 - 312

This Spring Drive model from 1991 features a 40mm Stainless Steel case. Powered by the 3888 caliber with 19j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-c40ad200453d]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1991

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