Seiko Cal. 6640 - 426

This Kinetic model from 1977 features a 35mm Titanium case. Powered by the 6640 caliber with 34j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-575020c5465e]

Also known as: Monster, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1977

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