Seiko Cal. 4448 - 305

The 4448-305 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4448 caliber with 27j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-3ec939ec986e]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1968

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