This is a 5-button mini trackball mouse with Bluetooth connection! I bought it and tried it out, then stored it, but I'm not using it, so I'm putting it up for sale. Therefore, it's practically unused. The packaging is dirty, so I'm considering shipping the mouse only, but if you still want the packaging, I will send it as well. - Brand: Digio2 - Type: Trackball - Number of buttons: 5 buttons - Connection type: Bluetooth - Size: Small I tested it by connecting it to a PC, and it connected without any problems. If you don't know how to connect it, I will provide support, so please don't worry (*^^*)