Seiko Cal. 5661 - 566

The Seiko 5661-566 represents an important milestone in Seiko's 1996 lineup. Powered by the 5661 caliber with 33j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-897ec2cbd9bf]

Also known as: Shogun, Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

White

Jewels

33j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1996

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