Seiko Cal. 6648 - 840

The Seiko 6648-840 represents an important milestone in Seiko's 1973 lineup. Powered by the 6648 caliber with 27j jewels beating at 36,000 bph, it delivers a 67 hours power reserve. [seikata-wm-0972e9edaeaa]

Also known as: Bellmatic, World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1973

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