Wireless gray trackball mouse with a blue ball. - Brand: Logitech - Color: Gray - Ball Color: Blue - Connectivity: Wireless - USB Receiver: Included Thank you for viewing. This is a listing for two M570s. The right one, and the one in photos 3-5, are fully functional. There are some scratches on the bottom, but it was hardly used at home. The other one has signs of use as it was used as the main mobile mouse. The left click sometimes has poor sensitivity. Other than that, it works normally. I will wrap them in bubble wrap and ship them via standard mail.