dc motor c1030t specifications as followingC1030TRated Vol.(V)3Starting Vol.(V)2.3 MaxRated Current(mA)55+/-20%Rated Speed(rpm)10000 MinStall Current(mA)140 MaxOperating Vol.(V)2.5-4.0Dimension(Diameter*Height)10*3.4+0.2mm We are ISO9001, ISO14001, QC080000 qualified manufacturer. Our customers include MOTOROLA,LENOVO, BYD, FOXCONN, HUAWEI, SONY ERICSSON