Seiko Cal. 4557 - 756

Released in 1983, the Cal. 4557 with design code 756 was part of Seiko's domestic market collection. Powered by the 4557 caliber with 30j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-3ab7356decde]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1983

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