Seiko Cal. 6661 - 791

The Seiko 6661-791 represents an important milestone in Seiko's 1981 lineup. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-cbdf972454b7]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1981

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