Seiko Cal. 5628 - 717

The 5628-717 is a sought-after Solar piece from Seiko's golden era. Powered by the 5628 caliber with 26j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-bb51193250fb]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1972

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