Picked up one of these MANY years ago and it has held up through thick and thin. Got a 2nd one with the black face which makes it easier to see if you have polarized sunglasses. Worked great for a while, but, it quit. Replaced the battery and was back in business. Then after a month, no display. Changed the battery again and was good for about a week and same thing. Replaced the battery a couple more times and the same thing. Worked great for a week then nothing.
To Backcountry's credit, I contacted them, told them about the problem and they said to send it back and as soon as I get my credit, I will get another one. It's well worth the price.