Seiko Cal. 0720 - 977

The Seiko 0720-977 represents an important milestone in Seiko's 1982 lineup. Powered by the 0720 caliber with 17j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-7945187ff1d8]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1982

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