(THE UNIT HAS NO DONGLE) Still Works If Your Device Has Bluetooth. The Logi White TR0006 Trackball Mouse is a wireless ergonomic mouse designed by Logitech. It features a trackball for precise and smooth navigation, optical tracking method, and 5 buttons for easy operation. The mouse is in white color and has been tested to be in great condition, making it a reliable and comfortable option for users looking for an efficient and unique pointing device. The mouse is in excellent condition please message me with any questions thank you.