Seiko Cal. 6648 - 987

The Seiko 6648-987 represents an important milestone in Seiko's 1985 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-359e84b60065]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1985

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