Pari Trek S portable nebulizers and medical supplies for adults and children is your best choice for a portable nebulizer. A great choice for treating asthma and COPD. There are many portable battery operated nebulizers on the market but this is the Gold Standard for respiratory medication delivery. Pari Trek S has been used by many major pharmaceutical companies for clinical testing on inhaled respiratory medications. Available as a complete package with rechargeable battery pack or as an affordable basic package Pari Trek is a great choice for breathing treatments.