Seiko Cal. 4478 - 840

The Seiko 4478-840 represents an important milestone in Seiko's 1986 lineup. Powered by the 4478 caliber with 27j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-3a86126189ab]

Also known as: Crown, Emperor

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1986

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