Seiko Cal. 6637 - 199

The Seiko 6637-199 represents an important milestone in Seiko's 1968 lineup. It features a Green dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-3d473b2356ac]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1968

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