Seiko Cal. 5642 - 633

The Seiko 5642-633 represents an important milestone in Seiko's 1965 lineup. Powered by the 5642 caliber with 19j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-1bb7fe8e85a7]

Also known as: Flighty

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1965

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