Please check the product information on the manufacturer's website below. https://www.logicool.co.jp/ja-jp/products/mice/m750-signature-wireless-mouse.html In addition to the features of the "SIGNATURE M650", it can connect to up to 3 devices. It also supports Flow, which allows you to seamlessly control multiple computers. As shown in the photos, it is unopened and unused. I am selling this because I accidentally purchased too many. It hasn't even been three days since I purchased it. There are no signs of it being dropped or subjected to any impact. I cannot disclose the warranty (purchase receipt), but I have set the price quite low, so I would like to refrain from handling initial defects. Recently, it is almost unheard of to get a defective product of this type, but I will leave the judgment up to you. Based on the above points, please consider purchasing this with the understanding that you will be using it yourself. Thank you.