Seiko Cal. 6311 - 621

The Seiko 6311-621 represents an important milestone in Seiko's 1989 lineup. It features a Green dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-fa81d9f1aea0]

Also known as: Sumo, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1989

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