Features: 1) Group call 2) Base with speaker phone and dial keypad 3) Multichannel access with autoscan 4) Multihandset system (up to 10) 5) Caller ID with call waiting (CIDCW) 6) LCD and handset keypad with backlit 7) Tone / pulse dialing mode selection 8) Change channel during conversation 9) Flash time programmable 10) Music on hold 11) Keypad lock 12) Ring and voice volume adjustable for handset and base 13) Handset with power saving function 14) Low battery alert and display 15) Built-in voice security circuit (scrambler) 16) Auto answer and auto hang up 17) Transfer call between handsets and base 18) Fast charge Outer packing: Cartons