DESC: Panasonic KX-TG5456S 5.8GHz GigaRange Digital Cordless Phone features 5.8 GHz Frequency-Hopping Spread Spectrum (FHSS) Technology. FHSS technology improves calling range and clarity, and eliminates cross talk. Because it rapidly changes transmission frequencies within the 5.8GHz bandwidth, this cordless system helps reduce the possibility of eavesdropping. 5.8GHz technology operates on a different wavelength with much less traffic than 2.4GHz technology, yet maintains outstanding levels of security, clarity and range. Plus, 5.8GHz technology will not interfere with wireless computer networks using 900MHz or 2.4GHz technology.