Seiko Cal. 6637 - 248

The 6637-248 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6637 caliber with 26j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-0658737b56b3]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1970

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