This duo is perfect. It allows to place the base where it shines best, which is not necessarily very accessible, and install the handset anywhere. Moreover, its compatibility has allowed me to reactivate my three Gigaset C46, and wake my two Gigaset 4000 Micro (that fit in the pocket to go in the garden but which are no longer sold, one wonders why ...). So I combined six for the price of one! All delivered by AMAZON, obviously. Gigaset E490 DECT WIRELESS without answering Black and Grey