Seiko Cal. 6650 - 658

The 6650-658 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6650 caliber with 23j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-a74bd95cb049]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1975

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