This phone features Audio Assist, to temporarily increase volume and enhance sound frequencies that make speech easier to understand. Plus, screening calls has never been easier. With Caller ID Announce, the handset announces the name of the caller, so you don't have to scramble for the handset to see who is calling. Its HD audio with equalizer is customizable to match your hearing needs. And, with the DECT 6.0 digital cordless technology, your calls are protected form identity theft by being digitized and encrypted, making it nearly impossible for someone to eavesdrop on your private calls.