Seiko Cal. 4531 - 194

The Seiko 4531-194 represents an important milestone in Seiko's 1966 lineup. It features a Silver dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-54614ea8c12f]

Also known as: Sumo, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1966

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