Seiko Cal. 6637 - 732

The Seiko 6637-732 represents an important milestone in Seiko's 1974 lineup. Powered by the 6637 caliber with 32j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-89f15e26b0b3]

Also known as: Silverwave, World Timer

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1974

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