This cordless phone set frees you to move about your house, and the handy headset included with the main base lets you keep both hands free as you talk. All have DECT 6.0 technology and HD audio to ensure clear, interference-free communication. Phones also include push-to-talk technology, letting you use the handsets like walkie-talkies; voice-announce name/number caller ID; digital answering system with 14 minutes of recording time and handset speakerphones. Headset has a 500-ft. range and comes with 3 earpieces and a headpiece, so you can wear it how you like. Main base is 6" w x 3 3/4" h x 4" d; handsets are 1 3/4" w x 6 3/4" h x 3/4" d; charging base is 3" w x 3 1/4" h x 3 1/2" d.