A4Tech X7 Laser Gaming Mouse (Xl-760H) Black Ultra Far Wireless - 15 meters Multi-link Receiver allows to link up to any 3 set of G-Cube Ultra Far Mice & Keyboard Right button offers 16 Funcations in 1 Click 4D Wheel - Horizontal & Vertical Scrolling 800 / 1000 / 1200 / 1600 / 2000 dpi Shift