The Braun Satin Hair 7 ST 780 Senso Care straightener is currently my third unit of Brown. Before that I had the Braun Satin Hair 7 straightener ST 710 and ST 730 Braun Satin Hair 7 straightener. Both with Iontec technology. I use my hair straighteners almost daily and feel the results of my hair better than that of the two predecessors. The "technology Iontec" I do not miss. I just hope that this Haargätter lasts longer than about a year.