Seiko Cal. 5665 - 509

The 5665-509 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5665 caliber with 31j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-c9149583d592]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1977

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