Logitech M570 Wireless Trackball Mouse
$30.29Trackball comfort: Sculpted shape supports your hand and stays in one place-move the cursor without moving your arm
Work and play anywhere: Get smooth, precise cursor control wherever you use your trackball-your desk, couch, even your bed
Long battery life: Go for up to 18 months without changing the included AA battery* (*Battery life may vary based on user and computing conditions)