Size: 20pcsOperates
voltage: 2.5 4.0
VDC Rated voltage: 3.0
VDC Rated rotor speed: 3500RPM
Insulation resistance: 10Mohm
Min Direction of rotation: arbitrary direction
Dimensions: 4mm x 8mm (D*H) Made for vibration alerts in cell phones and pagers Comes with a removable rubber boot with two leads