1LCD 3line display, with premarking and editing functions, recall and pause functions. 2The same basic unit can register up to 5 devices, and each device can register up to 4 basic devices. 330 incoming numbers memories and 10 outgoing numbers memories, 50 phone book memories, containing 12 characters, up to 20 numbers. 4The call can transfer to another device and support internal calls between two devices, external calls and conference calls between two phones. 510 ringtone options, suitable for different melody of different calls, adjustable ringtone/headphone/handsfree volume. 6Alarm function, you can set the audio/pulse dial mode, flashing time 100/300/600/1000ms for selection, 16 interface languages. 7LCD backlight function, automatic/manual answer function, dial restriction function, keyboard lock function, mute function. Item Type:Expandable Cordless TelephoneMaterial: PlasticColor: BlackWeight: Approx. 342.0g/12.1ozModel: D1005Input: 100-240V, 50/60hzFrequency: 1.8/1.9ghz16 Interface Languages: Portuguese, Spanish, English, French, German, Italian, Dutch, Hungarian, Greek, Polish, Danish, Norwegian, Swedish, Turkish, Russian and Ukrainian.Battery: 2 x AAA batteries (not included)Phone Size: 16.6x4.6 x2.4 cm / 6.5x1.8x0.9 inBase size: 8.2x7.5x9.9 cm / 3.2x3.0x3.9 in 1 x Expandable Cordless Telephone1 x Base1 x Adapter1 x Phone Cable1 x Manual