Seiko Cal. 6173 - 633

The Seiko 6173-633 represents an important milestone in Seiko's 1977 lineup. Powered by the 6173 caliber with 20j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-bedf4fa3f9fc]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1977

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