Seiko Cal. 5656 - 671

The 5656-671 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5656 caliber with 29j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-bb5c999eade3]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1974

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