Seiko Cal. 4564 - 720

The 4564-720 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4564 caliber with 31j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-acc8b454da78]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1990

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