Seiko Cal. 4578 - 741

This Automatic model from 1991 features a 40mm Hardlex-Coated Steel case. Powered by the 4578 caliber with 18j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-47bcae1729f1]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1991

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