Seiko Cal. 6630 - 351

The Seiko 6630-351 represents an important milestone in Seiko's 1975 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-3a43d216e6b7]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1975

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