Seiko Cal. 6630 - 257

The Seiko 6630-257 represents an important milestone in Seiko's 1976 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-abcec716ffe4]

Also known as: Turtle

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1976

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