Seiko Cal. 5644 - 285

The Seiko 5644-285 represents an important milestone in Seiko's 1982 lineup. Powered by the 5644 caliber with 32j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-00936abbfbf6]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

13.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1982

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