Seiko Cal. 5660 - 704

This Quartz model from 1965 features a 36mm Hardlex-Coated Steel case. Powered by the 5660 caliber with 26j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-6693e80d743c]

Also known as: UFO, Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1965

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