Seiko Cal. 4564 - 561

The Seiko 4564-561 represents an important milestone in Seiko's 1990 lineup. It features a Green dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-e2c21d96356f]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1990

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