Seiko Cal. 5664 - 241

Released in 1966, the Cal. 5664 with design code 241 was part of Seiko's domestic market collection. Powered by the 5664 caliber with 27j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-ca59fa53d0cc]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1966

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