Operating Voltage: 2.2-3.6V Rated Voltage: 3V Rated Current:50mA Max Rated Speed: 12000+/-2500 RPM Starting Current: 95mA Max Terminal Resistance:40+/-20%Ω Starting Voltage:1.7V Max Shaft End Play: 0.1-0.3MM Application: PDA, Mobilephone, messager, pager and other vibration application.