Seiko Cal. 4478 - 730

The 4478-730 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4478 caliber with 28j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-e9015253ce5d]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1987

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