PolarisWaterproof Micro Compass Series/Watchband or EDC or with mini Whistle or with Whistle

I have some Velcro straps hanging around so I threaded one through which lets me attach it to my bike.I bought this to go on my bicycle's handlebar stem but the stem bolt is steel so that didn't work.I then moved it to my aerobars (one advantage to using a Velcro strap) and it works brilliantly. It will also work on an alloy or carbon handlebar if you mount it away from the stem bolt. Orientation does not matter, it just has to be roughly flat.Some reviewers complain it doesn't rotate and that's almost certainly because there is iron nearby. Even attaching it to a watch strap won't work if your watch case is steel. But if you find the right place to put it, it will work great. It is slightly luminous, but only just.Very easy to read, good value for money, accurate. Checks all the boxes.

Fits great

Easy to read

Convenient on-the-go quick reference compass. Very well built. Soft firm rubber band is more flexible and less likely to break like other watch band compasses. The compass is accurate for what it is - gives me 8 cardinal directions on-the-go when I don’t need or want pull out my watch compass or military compass. The glow-in-the-dark feature is another nice to have. Would but again. My picture shows both my Garmin Instinct 2x compass for comparison.

I keep it on my watch and it always shows me magnetic north. The exceptions are when I am standing somewhere there are massive electrical currents or strong magnetic fields.Only half of it glows, but that is fine since you can still tell which direction North is.It is a bit thicker than my watch, but my watch is very thin. I like the heavy acrylic cover, and that the dial floats.Even though I don’t go easy on it, it has been durable and has not broken. I expect it to last the rest of my life.

Loses all accuracy if it's anywhere near a piece of metal. I was using it for my motorcycle and it just was completely off. Further the bandwidth slots of course have to match your watch and if you have a sports watch, the band will probably be too big for this and I don't think you'd want to wear it on a dress watch. Good idea but not functional. Can't recommend it.

Compass on my g-shock. Easy directions at all times.

1. It was affected by my fitness watch, unless I kept it near the clasp of the wrist strap of my watch ie. far from the watch head.2. After a few (3 or 4) weeks it froze and would not move anymore, no matter what I tried to do to unfreeze it.Next time I'll go for Quality, even if it costs more. It's Cheap (Low price + low quality).