Seiko Cal. 5631 - 128

The Seiko 5631-128 represents an important milestone in Seiko's 1998 lineup. Powered by the 5631 caliber with 28j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-a33f5375e774]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1998

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