Seiko Cal. 4540 - 201

The Seiko 4540-201 represents an important milestone in Seiko's 1973 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-79aba31070a5]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1973

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