Seiko Cal. 4557 - 359

The Seiko 4557-359 represents an important milestone in Seiko's 1989 lineup. Powered by the 4557 caliber with 20j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-14dce8ff288c]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1989

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