Seiko Cal. 6648 - 991

The 6648-991 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6648 caliber with 29j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-f433e38367c2]

Also known as: Rally, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1977

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