Seiko Cal. 3818 - 678

This Spring Drive model from 1987 features a 44mm Titanium case. Powered by the 3818 caliber with 27j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-60dff8973f63]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1987

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