2.4 GHz Digital Spread Spectrum Technology (SST). Digital Answering System. Shock-Resistant, Splash Resistant Design. Diversity Antenna System. Dual Call Waiting Caller ID with 50-Station Memory. Digital Duplex Speakerphone. Dual Keypads. Simultaneous Keypad Dialing. Multi-Function LCD on Base and Handset. One-Touch Dialer. Headset Jack and Belt Clip. Lighted Handset Keypad. Navigator Key. 2-Way Paging/Automatic Intercom/Handset Locator. Up to 11-Day Standby Battery Life. Up to 4.5-Hour Talk Time. 24-Channel Auto-Scanning. Handset Volume Control (3-Level). Adjustable Ringer (Off/Low/High). Switchable Tone/Pulse Dialing. Flash/Pause/Redial. Wall Mountable."