Seiko Cal. 4447 - 218

The Seiko 4447-218 represents an important milestone in Seiko's 1976 lineup. Powered by the 4447 caliber with 30j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-40aa2d4b027c]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1976

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