Seiko Cal. 6650 - 721

The Seiko 6650-721 represents an important milestone in Seiko's 1990 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-1c632886f633]

Also known as: UFO, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1990

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