Seiko Cal. 4470 - 930

The 4470-930 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4470 caliber with 18j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-84aff35918fb]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1972

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