Seiko Cal. 5665 - 745

The 5665-745 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5665 caliber with 18j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-2d3c437774d7]

Also known as: Bullhead, Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1967

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