Seiko Cal. 4564 - 303

The Seiko 4564-303 represents an important milestone in Seiko's 1976 lineup. Powered by the 4564 caliber with 33j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-3cb92ed6f3b3]

Also known as: Sumo, Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1976

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