POLARIS Waterproof Micro Compass Series/Watchband or EDC or with mini Whistle or with Whistle

PRO - Quality product of Japan at a reasonable price. Legible dial with good lume for low light viewing. Decent accuracy. Mounts easily on a nylon or rubber watch band. Fluid inside compass nicely controls needle movements. CON - Small diameter of this compass is a mixed blessing. It’s unobtrusive, but a larger diameter would be easier to read.

Review for the watchband compass and initial impressions only so can't speak to longevity... The fit on a semi-tactical style black rubberized just under 1" wide watchband is perfect. There are little sharpish bumps on the underside of the compass case to catch on a watch band without damaging the band and the compass band rubber material holds well on a tactical style watch band at least. The watch compass is rounded so it fits under sleeves and doesn't catch on things and it's small enough to "fit" with the vibe of a tactical or diver style watch. Would be ideal if it were a tad thinner, but it's very livable as is. Driving or hiking with it on my watch, it's perfect for quick checks of direction. Included a nice orienteering instructions sheet as well to help explain basic magnetic declination and use. Great value for what it is. I'm a very happy camper (literally).

I’ve bought three of these over the years and they are very durable and really accurate. The glow background is pretty bright. I’m adding extra emphasis of durability and accuracy, I’m a hunter and wilderness guide and I’m rough on my gear and these I swear by.

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.

Love this little compass! Very accurate, and it does effectively glow in the dark. I attached it to my watch wristband and wear it everyday for outdoor work. It's been so helpful - you won't regret trying it!

For this price and this size, I kept my expectations reasonable. I use it when cycling. It fits comfortably on my Casio watch band. The compass must be horizontal to obtain a reading.

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).

Broke day one. Some never worked after they came out of the bag. Yes they technically point to a weak magnetic north….south (-; bag for the buck worth the money but only if your a gentile gentle soul haha. Never got the thing to fit as I broke a few before they passed through the fires of my life.