Seiko Cal. 4470 - 487

This Spring Drive model from 1971 features a 40mm Hardlex-Coated Steel case. Powered by the 4470 caliber with 32j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-5daddb40621b]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1971

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