Seiko Cal. 6648 - 679

The Seiko 6648-679 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-e31dfebd1a81]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1977

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