Seiko Cal. 6638 - 788

The 6638-788 is a sought-after Kinetic piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-6ff208761222]

Also known as: Sumo, Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

41mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1995

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