Features: 1) To backup and copy your phone book data in cell-phone cards 2) Capacity: 8KB, which can store 250 groups of telephone numbers 3) Support SIM card standard of GSM11.11, GSM11.12, GSM03.08, GSM13.40, CDMA3GPP2C.S0023-1 and ISO7816-1/2/3 4) Single unit operation: no need to connect to PC or PDA required 5) Support data exchange among different SIM cards 6) Even if power consumption is used up, the data will be kept well in the memory Inner packing: 1pc/blister card Outer packing: 200pcs/ctn Carton dimensions: 44 x 37 x 32.5cm N.W.: 8.5kg G.W.: 9.6kg