Seiko Cal. 4540 - 666

The Seiko 4540-666 represents an important milestone in Seiko's 1978 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ae0484ec5f43]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1978

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