Freedom to conference anywhere with voice encryption up to 24 hours of talk time and the ability to dial through a cell phoneFeatures Caller ID Conference Call Menu Driven Volume Control Noise Reduction System On-hook Dialing Phone Book - 20 names & numbers Wall-mountableLCD - Monochrome Backlit 1 phone lineInterfaces/Ports: 1 x Mini-phone Headset and 2 x Microphone Buttons & Keys: Keypad Hold Button Mute Button Redial/Pause1.9GHz frequencyDect 6.0 ConnectivityColor: black12 1/4" W x 2 1/2" H x 14 1/2" DIncludes: 4-cell 24-hour battery base station power supply console charger/PS analog RJ-11 cable and cell phone extension cable