Expand your i700 iCreation Phone into a whole home system by adding up to four extra handsets. Like any typical home phone system, each extra handset easily connects with your iCreation Phone and works just like your original handset, with all the same cool features. These advanced handsets features a 1.8-inch high-definition display screen. Designed in the "app-phone" style, the screen lets you easily navigate through calls logs, your phonebook, language options, and contrast options. And like a smart phone, you can even choose from different wallpapers or background colors, and view your call duration at any time. The handset"s cradle includes a built-in iPhone charger for easy, powered storage of your paired cell phone. The wireless handset also charges right from the base. The handset has five levels of adjustable volume, so even those with mild hearing loss can hear their calls. iCreation includes all the typical features of a landline phone, including call waiting, last number redial, and a battery indicator.