Meet one of the newest models of the Adesso Trackball product line the Adesso iMouse T50 This device is cable-free by utilizing the 2 4 GHz radio frequency technology offering a wireless range of up to 30 feet It's also fully programmable meaning every mouse button can be customized to your preferred function with its programmable driver With its 5 levels of DPI resolutions (400-4800) the optical trackball provides superior accuracy and smooth motion reducing hand movement and space This mouse trackball is also easy to maintain – just push trackball outward from back clean and push it back in place Its ergonomically contoured 2” large size trackball and adjustable leg stands further completes its ergonomic advantages making your daily computing tasks more comfortable and stress-free