Seiko Cal. 4478 - 489

The Seiko 4478-489 represents an important milestone in Seiko's 1991 lineup. It features a Silver dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-fcc4aaeede26]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1991

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