Seiko Cal. 6631 - 344

The 6631-344 is a sought-after Kinetic piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-3487087174d0]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

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