Seiko Cal. 6630 - 745

This Spring Drive model from 1999 features a 42mm Stainless Steel case. It features a Navy dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-5490dc02efcf]

Also known as: Monster, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1999

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