RCA 2111-2 Step DECT Cordless Phone features interference free DECT 6.0 Technology, and is expandable with up to 4 handsets. Other features include: call waiting caller ID, 50 name and number directory, 10 ringtones to choose from, handset locator, Mute, call transfer and intercom functions. Hearing aid compatible. This item includes 2 handsets.