Logitech trackball with wireless connection, featuring a blue ball. - Brand: Logitech - Connectivity: Wireless - Trackball color: Blue - Number of buttons: 5 - Battery type: AA batteries - USB receiver: Included - Trackball type: Ball type Thank you for viewing. I've been using it for several years without any problems, and although dust is visible in the photos, I think it's relatively clean. No accessories other than those in the photos are included.