Dual Interface Wired Telephone: or DTMF dual system, call quality is stable and clear, practical or office use. A of 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, 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 or 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 : High quality ABS , 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 , or your parents, so that you can with your family at any time. Note: This is not a wall phone. color:Black :ABS size:170 x 90 x 34mm Package Contents: 1 x Landline Phones Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.