Seiko Cal. 6661 - 784

The Seiko 6661-784 represents an important milestone in Seiko's 1978 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-1640fca007ad]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1978

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