Seiko Cal. 4540 - 327

The Seiko 4540-327 represents an important milestone in Seiko's 1966 lineup. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-678430f2b196]

Also known as: UFO, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1966

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