Seiko Cal. 4511 - 331

The Seiko 4511-331 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-f24f8fdf8481]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1971

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