Logitech M570 Wireless Trackball Mouse

Stay-put comfort Thumb-controlled trackball stays in one place No need to slide around a mouse or move your arm to move your cursor Sculpted shape supports your hand for comfortable control all day long Plug-and-forget Unifying receiver Wireless receiver is so tiny it can stay in your laptop Add five more Unifying-compatible devices like a wireless keyboard without multiple receivers filling up your USB ports Power to spare Go for up to 18 months without a battery change Uses just one AA battery (included) Battery indicator light eliminates surprises   Work and play anywhere Get precise cursor control wherever you want to use your trackball Works on hard tables, comfy sofas, even your leg Compact footprint—great for tight work spaces with limited room to use a mouse   Robust wireless Advanced Logitech 2.4 GHz for fast data transmission with virtually no delays or dropouts. Control your laptop, desktop computer or home theater PC from up to 30 ft. a