4PET NAIL GRINDERTECHNICAL DATATRANSFORMERNameplate output power (W):7.2WRoot mean square (Rms) input voltage (V):100-240VInput AC frequency:50/60HzRms output voltage (V):9VRms output current (mA):800mAAverageactiveefficiency:80.3%Efficiencyatlowload(10%):73.17%No-load power consumption (W):0.085W