Seiko Cal. 4491 - 448

The Seiko 4491-448 represents an important milestone in Seiko's 1971 lineup. Powered by the 4491 caliber with 20j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-f15e0bd35d3e]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1971

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