Suitable for people who have hearing, vision or dexterity impairments, BT's 4000 Big Button Telephone is accessible & easy to use. It not only has oversized buttons that are more easily identifiable, but it also features a large graphic display with clear text & poses no problem to hearing aid users. Featuring 50 saved numbers & the ability to block calls, this wireless DECT telephone provides a range of functions beyond its accessibility. DECT telephone for cordless use Large buttons for easier use 1.8" graphic display is easy to read 50 name & number directory Call blocking features Suitable for use with Hearing Aids