Seiko Cal. 4540 - 987

The 4540-987 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4540 caliber with 35j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-6606d88624d0]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1981

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