Seiko Cal. 6630 - 420

The Seiko 6630-420 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-79f723bba06b]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1973

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