Trackball comfort Your trackball stays in one place. so you don’t have to move your arm to move your cursor. Its sculpted shape supports your hand to let you work all day in comfort.Compact footprintShort on space? No problem. Because the trackball does not move. it’s perfect for tight workspaces and busy desks.Logitech Advanced 2.4 GHz wirelessYou get the reliability of a cord with cordless convenience and freedom—fast data transmission and virtually no delays or dropouts.Tiny. wireless receiverI is so small it can stay plugged in a USB port. You dont have to unplug it when you move around or worry about losing it. And your trackball is always ready to use.Storable receiverIf you do need to remove the tiny receiver. just tuck it…