Seiko Cal. 6637 - 176

The Seiko 6637-176 represents an important milestone in Seiko's 1966 lineup. Powered by the 6637 caliber with 31j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-cd29ec64c6c5]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1966

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