Seiko Cal. 4578 - 910

The 4578-910 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4578 caliber with 33j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-6ae54230eaf7]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1976

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