Seiko Cal. 6611 - 641

The Seiko 6611-641 represents an important milestone in Seiko's 1965 lineup. It features a Navy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-26329ec10bd8]

Also known as: Sumo, Bullhead

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

35mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1965

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