Seiko Cal. 4478 - 723

The Seiko 4478-723 represents an important milestone in Seiko's 1980 lineup. Powered by the 4478 caliber with 24j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-a8400188bbf5]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1980

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