HEARING AID COMPATBLE - This easy-to-use phone is designed for people with medium to severe hearing loss. If you are wearing hearing aids and wish to use them while on the phone, simply put your hearing aids on the “T” setting. EXTRA LOUDER RINGER - You will never miss a call thanks to this phone's 80dB loud ringtone. To give you an idea, this is more or less as loud as a vacuum cleaner or a power lawn mower. VOLUME BOOST CONTROL - This senior phone has 6 amplification levels and is equipped with a boost button that allows the user to increase the receiver volume up to 50 dB during calls. PHOTO MEMORY - The 3 one-touch memories with customisable pictures on the phone's base allow you to call your loved ones at the press of a button. ANSWERING MACHINE - It can record 30-minute-long messages that can be listened to by simply pressing a button on the phone's keypad, and if the person who left you a message spoke too fast, use the slow reading function to make sure you are not missing any important information. SOS FUNCTION – There is a red emergency button on this telephone’s main base which when pressed, activates its SOS function. Once the SOS function is activated, the phone automatically calls the four numbers you have pre-set, one by one, until someone answers. VIP PHONEBOOK - You have the possibility to store up to 50 numbers in this phone's special VIP phonebook, and to only allow incoming calls from those numbers.