Seiko Cal. 4576 - 178

This Hand-Winding model from 1973 features a 39mm Hardlex-Coated Steel case. Powered by the 4576 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-14d6d4adc20e]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1973

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