Seiko Cal. 5660 - 838

The Seiko 5660-838 represents an important milestone in Seiko's 1980 lineup. Powered by the 5660 caliber with 30j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-b41aa09006b1]

Also known as: Samurai, Golden Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1980

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