The Bontel T1000 GSM FIxed Wireless Landline Desktop Phone With Dual Sim Card Slot Telephone support 2 SIM cards (Not included in the Package) with a working frequency GSM 900/1800 MHZ. Easy to setup with no ground wire needed. Phone has a superior service quality with a strong Easy & Simple to Use: Can be put on desk or wall mounted. Widely used in family house, office, hotel or telephone shops etc. Features include: Ideal for Homes & Offices, Universal ie supports all networks, Dual sim, LCD display with green backlight,Handsfree and speaker phone, Caller ID, SMS Functions, FM, Clock display and alarm function, Mute function, TNC antenna, GSM 900/1800 MHZ, Strong quality Rechargeable battery 2000mAh, High Capacity phone book, Micro SD Slot & Sound Recording. Key Features Colour: Black Type of screen: LCD Display Phonebook Memory: large entries capacity Backlight LCD with status icons Adjustable Volume Ring Tone Options High capacity phone book, SMS functionality, Call history, Caller ID,Loud speaker, Caller ID, redial and Battery Life: about 5days (Standby)