DECT Plus technology takes the superb sound quality and outstanding range of DECT 6.0 phones to a whole new level. By increasing the frequency of error correction, the transmission quality is improved and the phone's range is extended. Engineered to work in 1.9 GHz frequency, DECT 6.0 phones won't conflict with common wireless devices such as 2.4 GHz routers, wireless keyboards and mice, microwave ovens and other household items. And because it's digital, you'll enjoy long range and clear sound while deterring eavesdropping. Everyone hears differently. To maximize clarity and accommodate hearing loss, this exclusive tone equalizer actually lets you control the bass, mid-range, or treble tones in a callers voice for maximum clarity.