Seiko Cal. 4478 - 337

The Seiko 4478-337 represents an important milestone in Seiko's 1977 lineup. It features a Green dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-9eca13fc3c08]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1977

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