It is the second one I buy for my grandmother, we bought a new one because the rubber bands broke and we couldn't find replacements...

Very mediocre headset, unfortunately. It consumes energy like crazy, as each battery lasts only for two to three hours. Obviously, anyone can understand that one battery per day or even two is not cost-effective for our wallet. It may be economical as a device, but the energy issue is very important. It doesn't have a button to turn it off, and as long as it has a battery inside, even when the level is very low, it consumes it. The only way to save energy is to remove the battery, which is not easy to do constantly for an elderly person, like my grandmother. In terms of functionality, it is relatively good, although there have been instances of feedback and noise in certain cases. But because the elderly do not have patience, the headset ended up being useless in the drawer. No comparison to the corresponding medical ones, it's better to save money gradually and get a hearing aid.