Seiko Cal. 5656 - 131

The 5656-131 is a sought-after Solar piece from Seiko's golden era. Powered by the 5656 caliber with 17j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-eb8fdd2e8d2c]

Also known as: Helmet, Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1992

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