Seiko Cal. 6650 - 731

The Seiko 6650-731 represents an important milestone in Seiko's 1981 lineup. With its 19mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-69eba37fb810]

Also known as: UFO, World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1981

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