Great device. Simple easy to use and you don't know you're even wearing it. Highly recommend
its great, easy to use, with big numbers
2nd air physio.It is brilliant for lung problems. i think it has a design flaw. The
cap does not fit securely, and comes loose easily. A threaded **** design
would be more secure Otherwise it does work perfectly for me and my lung problems.
Very fast delivery thank you. I have recommended you to all of my friends and family .