1)LY-008B can copy 2 SIM cards separately, the capacity is 2 x 250 = 500 records, and there is a special function that the users can set up their passwords on the device, so it can protect the data which won't be used by others. (2)LY-008A can copy 1 SIM card and 40 SMS messages, 8kb for 250 phone numbers,and there is a special function for it, the users can set up their passwords on the device, so it can protect the data which won't be used by others. Packing Details: QTY : 200PCS/CTN G.W. :15.2KGS N.W. :14.2KGS SIZE :54.5 x 30 x 30CM Currency: USD Unit Price: Quantity: Delivery: 15 days