Seiko Cal. 6663 - 721

The Seiko 6663-721 represents an important milestone in Seiko's 1980 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-6182bc7736ab]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1980

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