Seiko Cal. 4540 - 402

Released in 1978, the Cal. 4540 with design code 402 was part of Seiko's domestic market collection. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-7bf37fced5ac]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1978

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