This is a Kensington trackball with a red ball, offering comfortable wireless operation. Kensington Expert Mouse - Brand: Kensington - Model Name: Expert Mouse Wireless Trackball - Operating Method: Wireless - Color: Red ball - Battery Type: AA batteries This is a used item, so there is some wear and tear. The only included accessories are 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 Source... Battery powered