The Vtech ES1820-3A is a high quality handset combo, featuring a digital answering machine, a large talk range and a clear, speakerphone. The two extra handsets allow you to have phones throughout your home or small office environment. **300m cordless handset range refers to the maximum open field range. Actual range may vary depending on intervening obstacles. ***In talking mode, the handset automatically adjusts and minimizes its radio frequency power according to the distance between the handset and base unit.