1LCD 3line display. Premark and edit features. Redial and pause functions. 2The same basic unit can register up to 5 devices, and each device can register up to 4 basic devices. 330 memory input numbers and 10 memory output numbers. 50 phone book memories, containing 12 characters, up to 20 numbers. 4The call is transferred to another device and the internal call between the 2 devices. External calls and conference calls between 2 phones. 510 touches to choose. The ringtone/headphone/handsfree volume is adjustable. Different melody for different calls. 6Alarm function. You can set the tone/pulse dialing 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: Telephone Material: PlasticColor: As Pictures ShownWeight: Approx. 442g/15.6oz Product Model: D1002 Frequency: 1.8/1.9ghz Type of Ringtone: 10 Songs GAP Protocol: Support Call Storage: 30 Groups Calling System:FSK/DTMF Dual System Hands-free Calling: Both Host andSub-machine Are Supported Telephone Transfer: Support Charging Function: Sub-machine Support Preset Dial: Supported Extended Number of Submachines: Support 5pcs Third Party Call: Outside Line and 2pcs Sub-machine Type: Digital Cordless Telephone 16 Interface Languages: Portuguese, Spanish, English, French, German, Italian, Dutch, Hungarian, Greek, Polish, Danish, Norwegian, Swedish, Turkish, Russian and Ukrainian. Ringer Adjustment: Ringer 5 Gear, Handset 5 Gear, Hands-free 6 Gear Alarm Settings: Supported Discharge Storage: 10 Sets Internal Intercom: Support Re-dial/stop: Support Preset Dial: Supported Flash Function: Supported Keyboard Lock Feature: Supported Luminous Function: Screen Blue Backlight Working Indicator and Charging Indicator Battery: 2XAAA Battery (not Included, Rechargeable Battery is Recommended) Wire Length of Adapter: Approx. 1.4m/4.6ft Telephone Line Length: Approx. 2m/6.6ft 1 xSub-Telephone 1 x Base 1 x Manual 1 x Power Adapter 1 x Telephone Cable 2xAAA rechargeable batteries are recommended.