Seiko Cal. 6631 - 353

This Spring Drive model from 1986 features a 44mm Stainless Steel case. Powered by the 6631 caliber with 23j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-b73d4893b38f]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1986

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