Seiko Cal. 6661 - 646

The Seiko 6661-646 represents an important milestone in Seiko's 1979 lineup. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-44d91a9049b1]

Also known as: Bellmatic, World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1979

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