Seiko Cal. 4427 - 866

This Hand-Winding model from 1974 features a 42mm Two-Tone case. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-9c260da7b8b4]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1974

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