Digital Hearing Amplifier Volume Control - Mini Adjustable Noise Reduction Audiologist Design for Left & Right Ear

These amazed me. I couldn't afford to pay a small fortune for prescribed hearing aids, do I thought that I'd try these because they had a money back guarantee. I bought 2 of these so I could have one for each ear. I soon found out that you didn't need to put these deep into the ear canal, but you got the more natural sounds by inserting right a the entrance. I also worried that I wore glasses, and was a little afraid that I would be knocking them off, but my glasses have not given me any problems. They only negative thing I can say is that they didn't give in writing what size battery is needed for these or how long to expect batteries to last. At this point I'm guessing a week or two, but then I'll need to remember to take used batteries to the store with me to purchase new ones until I know the right size.

I have purchased many brands, shape and sizes. I didn't realize my ear canals are small. Fits perfect. Also small units. In a store I could hear next isle over people talking. Color me happy.

Purchased 2 P2090 hearing amplifier, cam with no operators manual, on what,how etc for domes tubes volume control can you send me a pdf file or something