Expandable Cordless Phone System with Ringer Amplifier 3 Lines Display Support 5 Handsets Connection Call Block Hands-free Calls Intercom Conference Call Mute Function 16 Languages for Office Business Home Family Features: ♦ LCD 3 lines display. Pre-dial and edit function. Redial and pause function. ♦ Maximum 5 handsets can be registered to the same base unit, and maximum 4 bases per handset. ♦ 30 incoming numbers memories and 10 last numbers redial. 50 phone book memories with 32 digits maximum. ♦ Call transfer to other handset and intercom call between two handsets. Conference call between external call and two handsets. ♦ 5 basic ringer tones and 5 melodies ringer tones for selection. Ringing tone/earpiece/hands-free volume adjustable in 5-levels. Different melody for different call available. ♦ Alarm clock function. Tone/Pulse dialing mode can be set. Flash time 100/300/600/1000ms for selection. 16 kinds of interface languages. ♦ LCD backlight function. Auto/manual answering function. Dialing barring function. Keypad lock function. Mute function. In use and charge LED indicator. ♦ Come with a ringer amplifier 2 ringer volume to adjust, design with a switch at the side, high and low to choose to meet your needs. Battery free and flashing light design as reminder when telephone ringing. Specification: Model: D1004 Handset Size: 18x5.6x2.2cm Handset Base: 11.5x8x9.5cm Product Weight: 220g 16 System Languages: English, German, French, Italian, Spanish, Portuguese, Russian, Turkish, Greek, Ukrainian, Polish, Hungarian, Swedish, Dutch, Danish and Norwegian. 1Network Dependent  -   Dual mode caller ID (FSK/DTMF)  -   Conference call (external and internal)  -   Dialing barring function. AC/DC Adaptor -  Input Voltage :   100 – 240V AC -  Input Frequency:  50/60Hz -  Output Voltage:  6V – 500mA   Internal Back-Up Battery : -Rechargeable battery:  2 x 1.2V AAA400 mAh                 -Talk /Standby Time:  10 Hrs/ 120 Hrs -Charging Time: 8 Hrs Telephone Ringer Amplifier  Size: 9.5 x 5.6 x 2.7cm Weight: 37g/1.3oz Color: White Volume Level: HI (70DB), LO (60DB) Suitable Connector Type: 6P2C Packing List: 1 x Handset 1 x Base 1 x Power Adaptor 1 x User Manual 2 x Rechargeable Battery 1 x Telephone Ringer Amplifier