*3-IN-1 multifunctional Vacuum Cleaner, suitable for all the vehicle and small apartment. *For Car,floor, Sofa, keyboard, curtain ect. vacuuming. *SOS function, put the device on the car roof and turn on the warning lamp for help. *Light indicator:quick flash when battery is low, slow flash when charging,light's on after full charged. *Over-charge, over-voltage, over-current, over-temperature protection for safety use.