Handset for the ATT-SB67118 and SB67138 1 to 4 line capability DECT 6.0 Zero blind slot digital technology Unsurpassed range - redefining long range coverage and clarity Push-to-talk intercom - from base to handset and from handset to handset Expandable system (use up to 10 cordless handsets through a single phone jack) Intercom and call transfer between handsets and base station 10 Speed dial and 10 intercom number locations 3 Party conferencing Handset speakerphone Selectable ringtones Handset, speakerphone, headset and ringer volume control Last 10 number redial 100 Name/number phonebook directory Blue backlit keypad and display Mute Hold Chain dialing Headset compatible (2.5mm jack) Caller ID/ Call waiting features Caller ID displays on the handset and base 50 Name/number caller ID history Replacement Battery: BATT-27910