Seiko Cal. 4561 - 303

The Seiko 4561-303 represents an important milestone in Seiko's 1973 lineup. Powered by the 4561 caliber with 23j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-02ab8f94f9f0]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

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