Seiko Cal. 6311 - 661

The Seiko 6311-661 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-1c9bf72fc1c2]

Also known as: Turtle, Silverwave

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1971

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