Seiko Cal. 4578 - 270

This Spring Drive model from 1994 features a 43mm Two-Tone case. Powered by the 4578 caliber with 19j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-9ea9500306cb]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1994

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