Well, mine is just called the Bell 8 function. It may have been discontinued. After going through the setup stage, it goes to the screen that shows mile per hour and time. But when I rode it or spinned the front wheel (spinning in both directions) the mph area shows "0". The batteries, while old, are not dead. It goes through the setup process just fine and shows 0 mph and time. When I couldn't get it to read the speed I removed everything. The clamp to strap the pickup to the fork leg is pretty pathetic. Like a plastic hose clamp.
Also, it is a wired unit, not wireless.