Seiko Cal. 4497 - 634

The 4497-634 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4497 caliber with 21j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-336628950106]

Also known as: Rally, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1970

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