Seiko Cal. 6643 - 662

The Seiko 6643-662 represents an important milestone in Seiko's 1997 lineup. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-5f28ce552a33]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1997

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