Seiko Cal. 4428 - 778

This Spring Drive model from 1990 features a 36mm Two-Tone case. It features a White dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-be0f113ca2fa]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1990

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