DECT 6.0 technology offers the best digital encryption available, crystal clear sound, and extender range when compared to other technologies. High-definition sound processing to ensure that voices sound as clear and strong as an in-room conversation. Hybrid Bluetooth technology links your Galaxy SII to the phone system while the built-in cradle keeps your battery fully charged. High-definition 1.8 color LCD screen offers 11 levels of adjustable contrast. Dual mobile phonebook synchronization to DECT landline handset. Our Dual Dock Samsung Galaxy & DECT 6.0 Cordless Phone lets you make, receive, or transfer phone calls from either your Galaxy SII or a landline. Incoming calls will ring on both your cell phone and the included cordless handset, so there's no need to scramble to find the correct phone to answer. . . . . Dual Bluetooth phone connections. Includes a built-in speakerphone, alarm clock, and caller ID capability with 200-name memory. Supports up to four additional handsets on a single phone line. 120V.