Seiko Cal. 7057 - 663

The Seiko 7057-663 represents an important milestone in Seiko's 1971 lineup. Powered by the 7057 caliber with 19j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-e231e0c2f722]

Also known as: Bullhead, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1971

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