Seiko Cal. 4540 - 655

The Seiko 4540-655 represents an important milestone in Seiko's 1985 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-60a2359fa539]

Also known as: Helmet, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1985

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