Seiko Cal. 4578 - 401

The 4578-401 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4578 caliber with 27j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-577ca0cbb4c8]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Champagne

Jewels

27j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1995

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