Seiko Cal. 4540 - 311

The Seiko 4540-311 represents an important milestone in Seiko's 1987 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-0a32483d15ff]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1987

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