Features: ☎ Wireless GMS Desk Phone - Support dual SIM cards and GSM 850/900 /1800/1900 frequency, caller ID; Storage 50 missed call or received calls and the last 10 dialed number; 8 speed dial keys and redial function, support three-way conference call and so on. ☎ Large Storage Capacity - Your wireless phone has a powerful Phone book which can store 300 names or contact numbers. And the memory storage capacity of your SIM card depends on your SIM/R-UIM card provider. The phone design with 2 SIM cards slots. ☎ External Antenna - External antenna makes the signal receive more stable, get rid of the trouble of disconnection, ensure every call sound quality clear, unimpeded communication. ☎ Easy to Set up: 5 levels of large display contrast adjustable. Redial /Speed dial/hands-free/ringer volume adjustable functions are all available in this telephone. What'more, FM Radio, MP3 and voice recorder function is included. ☎ Powerful battery - Built-in 1000mAh Li-ion battery provides up to 24hrs of talk time and 7 days standby time.(depending on network environment) Specification: Model: DDK995+ Plug: US, EU (Optional) Size: 19x16.5x5cm/7.4x6.4x2in Battery: 1000mAh Standby Time: 7days Talk Time: 24 hours Charging Time: 6 hours Power consumption: Static