Seiko Cal. 6630 - 442

The Seiko 6630-442 represents an important milestone in Seiko's 1975 lineup. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-430e63c012e2]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1975

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