Seiko Cal. 6658 - 963

The Seiko 6658-963 represents an important milestone in Seiko's 1971 lineup. Powered by the 6658 caliber with 35j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-cfabc16dce91]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1971

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