This handset complements a duet together purchased together. The features are excellent. A change on one of the handsets can be automatically echoed to one or more other handsets on the same network. The copy of the directory, combined with handsets, is very helpful and avoids tedious manipulation. The instructions, delivered with, impresses with its 90 chapters, but in fact all functions are intuitive and are without recourse. The sound, whether in reception or transmission is excellent (it changes me of my old Philips handsets). Autonomy is also very large, the handsets come with belt clips, allowing the handset to have always at hand and not have to run to the base to answer a call. The intercom feature is very convenient, as the baby monitor function or conference call. I'm looking I find nothing negative to this phone. You will understand I am very, very satisfied with this purchase, which was delivered very quickly.