Seiko Cal. 4461 - 557

The Seiko 4461-557 represents an important milestone in Seiko's 1979 lineup. Powered by the 4461 caliber with 18j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-d640a88ea80f]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1979

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