Seiko Cal. 6637 - 789

This Automatic model from 1968 features a 42mm Titanium case. Powered by the 6637 caliber with 36j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-dad170c798f6]

Also known as: UFO, Goldfeather

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1968

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