Seiko Cal. 6630 - 442

The Seiko 6630-442 represents an important milestone in Seiko's 1973 lineup. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-d2434cf6e36c]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1973

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