Seiko Cal. 6647 - 337

The Seiko 6647-337 represents an important milestone in Seiko's 1994 lineup. Powered by the 6647 caliber with 21j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-3a82869cb84e]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1994

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