Seiko Cal. 4578 - 309

The 4578-309 is a sought-after Solar piece from Seiko's golden era. Powered by the 4578 caliber with 30j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-24133d7e98cc]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1984

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