Seiko Cal. 4478 - 798

The Seiko 4478-798 represents an important milestone in Seiko's 1981 lineup. Powered by the 4478 caliber with 20j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-464f5dc2da05]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1981

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