Seiko Cal. 5631 - 662

Released in 1997, the Cal. 5631 with design code 662 was part of Seiko's domestic market collection. It features a White dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-5ef6304ea215]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1997

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