Seiko Cal. 4449 - 731

The 4449-731 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4449 caliber with 30j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-26c13ab4feda]

Also known as: Bullhead, Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1978

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