The phrase "speed levels" refers to different rates or intensity at which something can move or happen. It means that there are various speeds or degrees of quickness. Full definition
It works in combination with an intelligent four - wheel drive technology with four electronic control, which makes it safe at its highest speed levels. (cardekho.com)
With longer gear ratios in third, fourth and fifth gears, engine speed levels are also lower while driving. (thetorquereport.com)
There are also 5 different speed levels so you can easily use this one to do a lot of other jobs, too. (geekwrapped.com)