Dual Interface Wired Telephone: /DTMF dual system, call quality is stable and clear, very practical or office use. A of five functions: volume increase and decrease, redial, return query, and calculation function that meet all you needs.Oversized Buttons: landline phone has enlarged button numbers for the elderly and visually impaired. Powered by telephone line, no need to install battery, energy saving and environmental protection. the call quality is stable and clear, very practical or office use.Easy to Use: Connect the phone to your phone wall by the phone line included in , No need batteries or AC/DC power. Can be placed on the desktop, providing many functions for convenient use. The call quality is stable and clear, easier to understand.High Quality Material: High quality ABS material, durable for long service life. Suitable for the elderly and the shortsighted people using, can be used at office, family, hotel. At the same time, it can also be used as a housewarming gift for your friends, or your parents, so that you can with your family at any time.Note: This is not a wall phone.color:BlackMaterial:ABSsize:170 x 90 x 34mmPackage Contents:1 x Landline PhonesOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.