Seiko Cal. 4478 - 717

The Seiko 4478-717 represents an important milestone in Seiko's 1988 lineup. It features a Green dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-b1eaac08c6ea]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1988

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