Seiko Cal. 0721 - 531

Released in 1974, the Cal. 0721 with design code 531 was part of Seiko's domestic market collection. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-2bda82dea04b]

Also known as: Shogun, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1974

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