Seiko Cal. 6657 - 951

Released in 1977, the Cal. 6657 with design code 951 was part of Seiko's domestic market collection. Powered by the 6657 caliber with 19j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-d0291c846e6d]

Also known as: Shogun, Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1977

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