Seiko Cal. 6658 - 707

The Seiko 6658-707 represents an important milestone in Seiko's 1970 lineup. Powered by the 6658 caliber with 23j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-b6028bf154b0]

Also known as: UFO, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1970

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