Well it works. You hold it at eye level and look out the side window and see your bearing in 5 degree increments, numbered every 30 degrees. So you can estimate with an accuracy of 2 degrees. The entire disk glows in the dark, not very bright, but sufficient for working. You can point in the direction you want to go, rotate the entire dial until the red triangle overlaps the black triangle, then keep that direction as you go and check regularly. The numbers are upside down so use the arrow and box below to see your heading. It doesn't look that strong, but the polymer can be made quite strong, making it lighter and giving the illusion of being brittle. As a complement, I recommend the 20mm marathon strap without a magnet.
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