Seiko Cal. 5665 - 631

The Seiko 5665-631 represents an important milestone in Seiko's 1992 lineup. It features a Cream dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-55a7fd5ceec0]

Also known as: UFO, Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1992

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