Seiko Cal. 4428 - 237

The Seiko 4428-237 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-a773cf28a752]

Also known as: Emperor, Arnie

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1967

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