Thank you for viewing! I purchased this for my cat, but it turned out to be too energetic, so I only used it twice before giving up. I'm now selling it. This product safely trims cat and dog nails without accidentally cutting them too short, like with nail clippers. It should be convenient for most cats. The grinding stone has a protective cover, and the open windows of different sizes allow for safe grinding according to the nail size. It's quiet and compact. It also felt good in my hand. It charges via USB, and a cable is included. The manual supports multiple languages, including Japanese. I think it's a very good product, so I hope you'll purchase it and use it to enhance your pet's life. Thank you.