Seiko Cal. 6631 - 644

The 6631-644 is a sought-after Kinetic piece from Seiko's golden era. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-de0e5ea021ad]

Also known as: Turtle

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1992

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