I purchased this but ended up not using it, so it's been sitting in a drawer. I'm now putting it up for sale. * The product is new and unused. The box is also unopened. * Please be sure to check the product condition in the images. * Although it is new, please understand that it has been stored at home before purchasing. 【Product Details】 A trackball wireless mouse, providing comfortable operability. - Model Name: ERGO M575S - Brand: logicool - Connectivity: Bluetooth Low Energy - Compatible OS: Windows, Mac - Features: Trackball - Color: Black - Battery: 1 AA battery