Seiko Cal. 5618 - 491

Seiko 5618-491

The 5618-491 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5618 caliber with 23j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-3016cd0ab9de]

Also known as: Shogun, Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
41mm
Case Thickness
13.4mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1977

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seikata-wm-3016cd0ab9de