Seiko Cal. 6641 - 678

The Seiko 6641-678 represents an important milestone in Seiko's 1997 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-536ba9ab5a76]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1997

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