Seiko Cal. 5635 - 839

The Seiko 5635-839 represents an important milestone in Seiko's 1977 lineup. Powered by the 5635 caliber with 18j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-e3103b9b6081]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1977

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