Vibration motor (C1020L) specifications: 1) Rated Voltage (V) : 3 2) Starting Voltage (V) : 2.3 3) Rated Current (mA) : 40±20% 4) Rated Speed (rpm) : 12000 Min 5) Stall Current (mA) :120 Max 6) Operating Voltage (V) : 2.7 3.3 7) Size (Diameter*Height): 10*2.0mm We are ISO9001, ISO14001, QC080000 qualified manufacturer. Our customers include MOTOROLA,LENOVO, BYD, FOXCONN, HUAWEI, SONY ERICSSON