It is also much less restrictive than the classic curling irons. He makes the loop all alone and it defeated in a wink. Frankly, it's much faster! (And very easy to use)
Finally, no risk of burns because it is he who does the work!
The only reason I did not give it 5 stars, it is simply because of its "footprint". It is a bit bulky and does not wick enough to root. So there are a few centimeters without loop. We should improve this.
In short:
The pros: pretty curls, adjustable time and heat (thus loops of different sizes), easy to use, much faster
the -: roots remain raplapla (price is excessive but worth it)