ELECOM HUGE Mouse Wireless (Receiver Included) Trackball Large Ball 8 Buttons Tilt Function Black M-HT1DRXBK I have confirmed that it connects to a computer and works without any problems. The receiver is of course included. The box is also included. Brand: ELECOM Color: Black Connectivity Technology: 2.4GHz Wireless, USB Features: Trackball Movement Detection Technology: Optical About this product: The large 52mm diameter trackball provides an unimaginable ball-handling feel. The "HUGE" wireless trackball mouse features a palm rest to reduce wrist strain during long PC work, and is operated with the index and middle fingers. By adopting a large 52mm diameter ball, this "HUGE" wireless trackball mouse, operated with the index and middle fingers, allows you to move the pointer over a wider range with a single operation. A low-resilience palm rest made of memory foam is used on the top surface of the main unit to reduce wrist strain during long hours of PC work. Connection Type... Wireless (Bluetooth) Power Supply... Battery Powered