Comparison : Item # XM-A162-0204C, BFCN-1525+SMT
Item # XM-A162-0204D, BFCN-1525+SMT
Item # XM-A163-0204C, BFCN-1840+SMT
Item # XM-A163-0204D, BFCN-1840+SMT
Item # XM-A164-0204C, BFCN-1945+SMT