Seiko Cal. 6231 - 177

The Seiko 6231-177 represents an important milestone in Seiko's 1967 lineup. Powered by the 6231 caliber with 22j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-a2be05ad7d8b]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1967

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