I believe it's called CHI - it's a 2 in 1 curling and flat iron that uses steam and ions to style the hair - which causes less damage/harm and decresses the chance of burning your hair. I've got a several friends who own it andd tell me it works well, ones had it for over 2 yeaars and tells me it still functions the same way when she first used it :)
A lot of girls in my school use this clamp free curler (i think called a u-curl) and their hair looks absolutely beautiful. however I have never tried it myself. downside is I think it can burn you easily because you use your hands to wrap the hair around the heated stick.