Seiko Cal. 3839 - 487

The Seiko 3839-487 represents an important milestone in Seiko's 1990 lineup. Powered by the 3839 caliber with 24j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-314d3efb7ed9]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

24j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1990

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