Seiko Cal. 6643 - 544

This Solar model from 1973 features a 44mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-3c0a2753f593]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1973

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