I bought this for work, but I'm selling it. Please note that I cannot provide repair assistance or take it to the store for repairs if it breaks down during the warranty period. ELM Electric Sharpener (Blue) Brand: ELM Pencils that can be sharpened: Wooden pencils up to 8mm in diameter It has strong power to sharpen pencils quickly and sharply. Features: Waste prevention mechanism: Automatically activates when sharpening is complete. Safety auto-stopper: A safety design that does not operate when the dust box is removed. Overheat prevention mechanism: Prevents overheating due to continuous use. Core tip adjustment slider: Allows you to adjust the thickness of the core tip. Suction cups for secure fixation. The motor stops when the shavings case is removed, ensuring safety. A nice feature is the suction cups on the bottom that make it easy to adhere to the desk. It has a waste prevention function, and you can see the amount of shavings. Requires 4 AA batteries for use.