With its advantages being that it is wireless, does not have any features that stick out, and has a battery life that is pretty satisfactory (I used it to listen to music for several hours before putting it in a case so that it would not interfere with other things), Cons: A non-obvious manner to install in the ear in combination with a touch "wall," which is automatically pressed during installation (so you have to first put them in your ear, and then turn on bluetooth on your phone). In other words, you have to place them in your ear before you can switch on bluetooth on your phone.
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