Seiko Cal. 4540 - 987

Seiko 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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seikata-wm-6606d88624d0