I wanted a box of 4 handsets so I opted for this duo kit that I completed with 2 handsets (a site that sells additional handsets at the same time that the duo case is not so easy to find! J ' Additional handsets bought elsewhere ...). I appreciate the speaker that is not routine among competitors. Good sound quality even if the crackling avoid nuisance than I thought sometimes occur but it is probably related to the operator. After a few days of use, I am fully satisfied.
