Seiko Cal. 6637 - 610

The Seiko 6637-610 represents an important milestone in Seiko's 1977 lineup. Powered by the 6637 caliber with 30j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-cd07be813589]

Also known as: Samurai

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1977

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