Seiko Cal. 5656 - 730

The 5656-730 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-ee9730cd9f17]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1991

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