Seiko Cal. 0721 - 663

The Seiko 0721-663 represents an important milestone in Seiko's 1977 lineup. Powered by the 0721 caliber with 35j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-39a3825d2f7a]

Also known as: Pogue, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1977

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