Seiko Cal. 6634 - 317

This Spring Drive model from 1986 features a 46mm Hardlex-Coated Steel case. Powered by the 6634 caliber with 35j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-92ff46b61fe1]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1986

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