I first Purchased a Air sense 10 auto set with Humidifier,My Surgeon wanted to check my Health fully before Operating.I was Diagnosed with Sleep apnoea,This premises was in Palmyra you stayed Overnight,they Observed you wired you up.Initially this is the Test to Say have you got Sleep apnoea.A Consultant will observe you all night,Make an appointment and Therapist will Diagnose your illness,in my Case I hired the Machine for Three weeks,then asked to Purchase there Machine,I Purchased my Own Online.Therapist had little to no interest in my Sleep apnoea.Period.Year and a Half later,I have p10 f 20 f30i masks, still not good seal, pulling mask off with f20 and f30i.I looked and Purchased a resumed Air mini,look around Good Deals .Like Packaged Deal got me the mask, machine, premium travel case and Battery, cheaper than what most Retailers were charging for Machine Only. Resmed Air Mini is the Game Changer-, tells you Your Stats each Night, through an App.Battery Own battery.