It functions as a treadmill should, but the LCD display is really messed up. All the digits to the right of the dot(s) are illegible. For example, there's what looks like a backwards 6, an H %26 a J, and others that could be a 3, or a 4, or a 9... but who knows? And it's been malfunctioning like this since I first began using it. Don't they check these things out at the manufacturing plant before boxing them up to sell? I would've returned it but I accidentally broke the rear right corner cover off and couldn't return it in that condition.