Seiko Cal. 5660 - 157

The 5660-157 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5660 caliber with 18j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-2044c5a58cf2]

Also known as: Shogun

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1968

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