Review on Bell Automotive Digital Compass with Mirror Mount - 22-1-29001-8 by Chris Laznovsky

While easy enough to install, the display is difficult to read and impossible at night due to the dim backlight. I ordered a replacement thinking I had a bad unit, but the replacement didn't work at all even after replacing the batteries with the original unit. I checked the batteries in both devices and both batteries showed less than 50% charge right out of the box. I even bought a new battery to try out both devices. The only device that actually worked was too dim to read at night and the day display was difficult to read at a glance. The replacement compass never worked, even with a new battery. Garbage. Don't waste money.