Seiko Cal. 6643 - 548

The Seiko 6643-548 represents an important milestone in Seiko's 1987 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-4772dd0ff865]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1987

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