BigTel 1202 Pair of cordless portable telephones with big keys, 80dB ring and up to 30dB amplified handset volume makes this set a great help for any one with hearing difficulty. Variable sound levels. Connect up to 3 more portable handsets with this base. Intercom function. In addition to loud ring, there is optical light flash to indicate incoming call. Back lit display screen and back lit illuminated numbers. Memory functions; redial, direct dial and 100 entry phone book. Low battery warning. Ring tone choice. Hearing aid compatible.