Seiko Cal. 4428 - 170

The Seiko 4428-170 represents an important milestone in Seiko's 1967 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-8f3402fc5e8a]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1967

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