Seiko Cal. 4427 - 864

This Spring Drive model from 1999 features a 37mm Two-Tone case. It features a Navy dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-c1083afff014]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1999

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