Seiko Cal. 5688 - 644

This Kinetic model from 1999 features a 37mm Hardlex-Coated Steel case. It features a Green dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-bcac70cc7ad0]

Also known as: Tuna, Silverwave

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1999

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