Seiko Cal. 6311 - 634

The Seiko 6311-634 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-32d428d1474f]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1978

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