Seiko Cal. 0728 - 547

This Spring Drive model from 1969 features a 45mm PVD Black case. Powered by the 0728 caliber with 30j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-402ef34db159]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1969

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