Seiko Cal. 6650 - 938

The 6650-938 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6650 caliber with 23j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-013ec93271e6]

Also known as: Silverwave, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1977

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