ZSTORE Ultrasonic Nebulizer

I have a medically complicated son who uses a nebulizer at least once a day everyday just for baseline airway clearance. He was recently in the hospital for a respiratory virus. I nurse told me she had seen another mother use a portable nebulizer that was attached to a mask. I looked it up immediately and ordered it. When you are a mother of a medically complex child you will try almost anything once! My son is used to doing a neb and loves it. But he loves to bite on the bottom of the mask and he thinks it is funny to knock the neb cup out of the mask. The fish mask on his old nebulizer doesn't fit him well and he is constantly dislodging it from his face. I always wonder how much of his meds he gets. The ZSTORE nebulizer is an amazing machine! The mask fits my son so well. If I can make it fit his tiny head and adult sized face I would imagine anyone could make it fit their face. Since there is no tubing he can't pull the mask off his face! Not once. If he really tries he can bite the bottom of the mask, but it takes so much work...I think he gave up. He gets the entire amount of medicine each time! It is so quiet and since it doesn't need to be attached to anything I can do it anywhere. My son can do his neb right in the room with the rest of the family. We don't have to leave the room and miss out on whatever the rest of the family is doing because we need to be attached to the noisy machine in his room. We are not getting 120 minutes of battery life (we get closer to 45 minutes). And each 3ml neb is taking 15 minutes....not the 4.5 minutes the manual claims. Since, his traditional nebulizer took the same amount of time I don't really care about how long the neb takes. The battery life is a little more concerning for me. With it new we have just enough time to do both of his nebs and clean the machine before we need to charge it. If the battery life degrades much over time then we won't be able to use it for his treatments. It charges quite quickly so we are able to charge it with plenty of time between treatments. This is not a deal breaker for me. I love everything else about this machine! The seller is quite responsive to questions and the customer service seems great. I am waiting on answers about the battery life and treatment time. I would purchase this again...and I plan on purchasing another (assuming the machine keeps working at its current levels for a while).