Expandable Cordless Telephone with Answering Machine and Dual Keypad. Find misplaced cell phone with a button on the base. Dial easily with large buttons on handsets and base. Hear callers more clearly with Amplified Handset Volume. Receive voicemail alerts at home, office or away with TAD. Other conveniences include Full Duplex Speakerphone, Power Back-Up Operation, Headset Jack, Baby Monitor, Silent Mode, Noise Reduction and Intelligent eco Mode. Optional Accessory Key Detector to work with Cordless Phones - KX-TGA20B.