Seiko Cal. 4428 - 373

This Automatic model from 1998 features a 37mm Two-Tone case. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-76e174cbc887]

Also known as: Helmet, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1998

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