In use, we must admit that the heating pads are effective. There are spring mounted and avoid pinching the hair too (and therefore to burn some). There is a kind of scanner that assesses the quality / moisture of your hair to adapt the temperature of "real time". And even if the marketing argument is doubtful, we must admit that the result is there. I sincerely doubt that a change of a few degrees is involved, I prefer to think that it is rather the effect of spring on skates.
Other things to know, it is equipped with a device to prevent wire wrap and a lock to prevent accidental opening during storage. It has 3 temperature settings according to your color / nature of your hair.
It also has a fairly practical system (Magic) that can prevent static electricity and therefore no longer have to smoothing unruly hair that go sulk in a corner.
Finally (and this is not negligible) has a black felt carrying case that protects it between uses and which do not take place in a drawer (unlike the original carton).
See its life but in any case, it replaced its predecessor.