Item No.: MSB0002B Product Name: Moblie Phone SIM Card Backup Product Size: 50*40*8 Min Order: 5000 Delivery Time: 20 Packing: blister card;200PCS;GW:10.80KG;48*43*33CM Description: 1, This product can back up and duplicate the directory materials in GSM or the CDMA cell-phone card fast ; 2, Back up capacity of device 8KB , can store 250 group telephone number originally; 3, This product is that a unit is operated, do not need connecting with computer and using ; 4, After materials back up, cell-phone for instance, is it needn't afraid and lose the directory materials either to lose; 5, When users need to use different cell-phone card because of different city or country, can share the backing up device materials to any cell-phone card ; 6, Even if the power is exhausted, will not lose the materials that have already store been in the spare device either.