Seiko Cal. 6643 - 511

This Solar model from 1974 features a 37mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-9453b0cb07b1]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1974

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