Seiko Cal. 5660 - 649

The Seiko 5660-649 represents an important milestone in Seiko's 1967 lineup. Powered by the 5660 caliber with 23j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-7bd60189310e]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1967

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