Seiko Cal. 5631 - 494

The Seiko 5631-494 represents an important milestone in Seiko's 1999 lineup. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-8f8dc16ff1f2]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1999

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