Seiko Cal. 5680 - 612

The 5680-612 is a sought-after Solar piece from Seiko's golden era. Powered by the 5680 caliber with 30j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-13e110139cb3]

Also known as: Tuna, Navigator

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1987

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