Working at 5.8 GHz FHSS GigaRange, the Panasonic KX-TG670B phone offers high quality sound without interference. The hearing aid compatibility of this Panasonic cordless phone makes it very convenient for people with hearing problems. The 3 line display screen, and the callerID with call waiting feature of this Panasonic phone never lets you miss a call. The wall mountable design of the Panasonic KX-TG670B phone gives you better space management. The low battery indicator of this Panasonic cordless phone warns you in advance, when the NIMH battery needs recharging. This Panasonic phone can store about 50 names and numbers in its callerID memory.