Seiko Cal. 5640 - 848

The Seiko 5640-848 represents an important milestone in Seiko's 1968 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-0775766d649c]

Also known as: UFO, Crown

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1968

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