Seiko Cal. 6660 - 988

The Seiko 6660-988 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-c034b7267551]

Also known as: Bellmatic, Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

37mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1981

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