Seiko Cal. 4422 - 348

The Seiko 4422-348 represents an important milestone in Seiko's 1974 lineup. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-d1f6c67d6ba8]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1974

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