Seiko Cal. 4445 - 320

The 4445-320 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4445 caliber with 19j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-16ec0ce5d327]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1990

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