Seiko Cal. 4557 - 760

The 4557-760 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4557 caliber with 19j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-229e2167c2c9]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1994

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