This is a Petio self-trimmer. It's cordless and battery-operated, so it's ready to use immediately. It can easily grind down the nails of pets like dogs and cats, and the three different file widths accommodate various nail types. It's recommended for long nails, pets and owners who are not good with nail clippers, and hard nails. The main body can be washed completely, making it easy to clean. I bought it for my cat, but my cat didn't like it, so I only used it once. I threw away the box, so I will ship it in different packaging. Product link (reference): Amazon product page https://www.amazon.co.jp/dp/B09YCKL9CZ?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1