Accessory handset - requires a CRL32102 or CRL32202 to operate. DECT 6.0 technology. Caller ID/Call waiting - stores 50 calls. Caller ID announce. Handset speakerphone. Audio assist. HD audio. Backlit keypad and display. Extra-large display. Visual ringing indicator. 50 Name and number phonebook directory. Intercom between handset and base unit. Conference between an outside line and up to 4 cordless handsets. Voicemail waiting indicator. English/Spanish/French setup menu. Talking digits. Quick access key for voicemail box. Last 10 number redial. Quiet mode silences the ringer. Battery type - 2.4V 400mAh Ni-MH. Size: 2.7Lx 7.1Wx 5H. Weight: 0.92 lbs.