Seiko Cal. 5633 - 688

The Seiko 5633-688 represents an important milestone in Seiko's 1987 lineup. Powered by the 5633 caliber with 25j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-78ba450d1967]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1987

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