Seiko Cal. 3818 - 281

The 3818-281 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3818 caliber with 28j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-b76fdbcea5cf]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1981

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