Seiko Cal. 5660 - 937

Released in 1994, the Cal. 5660 with design code 937 was part of Seiko's domestic market collection. With its 22mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-497dfbdb8cf6]

Also known as: Sumo, Shogun

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1994

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