SENHAI Electric Pencil Sharpener,USB Charge Drive or Battery-powered Automatic Sharpener for Home Office or School BATTERY POWERED: This is a pencil sharpener battery operated for mobility, easily take it with you anywhere, takes 4 x AA batteries (not included). COMPACT YET POWERFUL: Lightweight, compact and quiet pencil sharpener yet comes with a powerful motor in getting the job done WITH LED FLASH: With Led light flash when working, indicate operating conditions to keep safe. Elegant appearance, make it a great gift for kids. USB CHARGE DRIVE: With a USB cable, you can connect it to any USB device, like Notebook, PC computer, to get it powered. SAFE ASSURANCE: Automatic safety lock function function: The pencil sharpener stops operation once the shaving tray is removed. Note: Watch your kids from the Sharpener blade.