Seiko Cal. 6637 - 688

The 6637-688 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 35j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-db48af793cbf]

Also known as: Silverwave

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

46mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1980

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