Seiko Cal. 4549 - 637

The 4549-637 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4549 caliber with 34j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-a6b26df5af60]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1966

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