Seiko Cal. 6637 - 354

Released in 1966, the Cal. 6637 with design code 354 was part of Seiko's domestic market collection. Powered by the 6637 caliber with 23j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-6986cc2ad54c]

Also known as: Emperor, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1966

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