Seiko Cal. 0721 - 691

Released in 1989, the Cal. 0721 with design code 691 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-890c4adfe529]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1989

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