Seiko Cal. 5618 - 317

The 5618-317 is a sought-after Solar piece from Seiko's golden era. Powered by the 5618 caliber with 21j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-0765efc9dd3e]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1986

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