Seiko Cal. 0721 - 581

The Seiko 0721-581 represents an important milestone in Seiko's 1997 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-4a46bb7b71d8]

Also known as: UFO, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1997

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