Seiko Cal. 5660 - 344

Released in 1966, the Cal. 5660 with design code 344 was part of Seiko's domestic market collection. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-4be7ca426d80]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1966

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