Seiko Cal. 4428 - 837

The Seiko 4428-837 represents an important milestone in Seiko's 1986 lineup. It features a Silver dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-697a71a42bc2]

Also known as: Helmet, Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1986

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