Seiko Cal. 5656 - 630

The 5656-630 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5656 caliber with 25j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-56f8218ac188]

Also known as: World Timer, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1966

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