Seiko Cal. 6177 - 635

The Seiko 6177-635 represents an important milestone in Seiko's 1981 lineup. Powered by the 6177 caliber with 33j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-78c300e9140a]

Also known as: Sumo, World Timer

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

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