Seiko Cal. 4440 - 866

The Seiko 4440-866 represents an important milestone in Seiko's 1983 lineup. Powered by the 4440 caliber with 17j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-bb13b25075db]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1983

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