LeeKer LK-P04W Emergency SOS Corded Telephone The LeeKer LK-P04 SOS phone with Caller ID can be programmed to automatically call up to 10 emergency phone numbers; Supports up to 5 Wireless Pendants (2 included: Necklace and Wristband wireless pendant)  Trigger emergency calls up to 100 feet away from the base It can play a pre-recorded message when calling emergency numbers; Hearing Aid Friendly - Handset volume can be amplified by +40 dB (switch: HI), extra loud rings rated 90+ dB Visual incoming call flashing light alert on handset; ON/OFF Talking Caller ID  Voice announces incoming calls (phone numbers) and menu options; Large, easy to read LCD display with 5 levels of brightness and blue back lighting Large dialpad buttons/keys for easy dialing; Phonebook stores up to 50 telephone records (16 digit names & phone numbers); Remote control functions include:(1) Answer calls, (2) dial out pre-programmed SOS emergency numbers; (3) 1-touch emergency push buttons Stores up to 20 outgoing phone records (16 digit names & phone numbers); Retains all phone records and settings even if power is lost (it uses non-volatile memory); Compatible with FSK/DTMF Dual Caller ID systems