1)Backs-up and restores phonebook data from SIM card 2)Memory: 16KB-500 telephone records. (2different SIM Cards date Storage) 3)Password lock & phonebook viewing 4)Calendar display 5)Support date exchange among different SIM cards 6)Easy to operate, user-friendly operation interface supported 7)Device independent,No PC or PDA required 8)The Date can be save in the device more than 3 year,even if out of the electricity 9)The device is accordance with ISO/IEC 7816-3,GSM11.11 and GSM 11.12 standard,It can support 3V SIM card and R-UIM card Currency: USD Unit Price: Quantity: 200 pcs Delivery: 7 days