This is a Kensington trackball with a red ball, offering comfortable wireless operation. - Brand: Kensington - Model Name: Expert Mouse Wireless Trackball - Operation: Wireless - Color: Red ball - Battery Type: AA batteries This is a used item, so there may be some signs of use. The included accessories are only those shown in the photos. There is no USB receiver, but it worked fine with Bluetooth. Thank you for looking. Connection type... Wireless (Bluetooth) Power supply... Battery-powered