Seiko Cal. 6631 - 902

The Seiko 6631-902 represents an important milestone in Seiko's 1986 lineup. It features a Green dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-081eb990bc08]

Also known as: Sea Horse, Crown

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1986

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