Seiko Cal. 6630 - 687

The 6630-687 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6630 caliber with 33j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-801659cd3b41]

Also known as: Bellmatic, Crown

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1974

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