Seiko Cal. 4540 - 601

The 4540-601 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4540 caliber with 31j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-d7ed18ee5dd7]

Also known as: Tuna, Sea Horse

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1971

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