Trackball 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) For Windows or Mac OS: robust 2.4 GHz wireless connection lets you control your laptop, desktop computer or home theater PC wirelessly from up to 30 ft. Away Trackball comfort: sculpted shape supports your hand and stays in one place—move the cursor without moving your arm Note : In case of Wireless mouse, the USB receiver will be provided inside or along with the mouse 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) For Windows or Mac OS: robust 2.4 GHz wireless connection lets you control your laptop, desktop computer or home theater PC wirelessly from up to 30 ft. Away