After much research I purchased a Sono Health portable EKG and have been using it for a few years now. I have shared my EKGs with my cardiologist and she is happy that I am able to provide these when I’m having a cardiac episode. They seem to be consistent with her findings. I recently received an email from Sono Health with more of their products. I was interested in the portable nebulizer as I could use it without a cord. My nebulizer worked ok but was very loud and I found myself going into another room as to not bother others in my home while using it. I am very happy with the Sono Health portable as it is almost silent and I can sit and watch TV or be in the room with others and not disturb them. It provides a nice mist while being ultra quiet. I would recommend Sono Health products to anyone that is looking for diagnostic tests equipment or the other products they supply. Thanks Sono Health.