Seiko Cal. 4427 - 727

The Seiko 4427-727 represents an important milestone in Seiko's 1975 lineup. It features a White dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-ea5fbad7eef1]

Also known as: Bullhead, Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1975

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