Seiko Cal. 5656 - 503

The 5656-503 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5656 caliber with 20j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-d039bb836a0c]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1999

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