Easy to use - left or right hand, or cradled between both. Ideal for both laptops and desktops

Features:

• Plug and Play, easy to install
• Wireless, With trackball, cool
• Press then apper laser pointer for presentation
• Off table and without limitation of operational space
• Scrolling function can be controlled simply by your thumb
• USB 2.0 interface, plug and play, no software required.
• Special design, can avoid the harm on your wrist and muscle, greatly reduces discomfort for Arthritis and CTS suffers
• Place end of index or middle finger on trigger button & thumb on roller ball
• Suitable for Tablet PC & Laptop & Desktop computer
• USB PORT, USB receiver is included
• FOUR GROUP DPI: 400,600,800,100
• Battery require: 1 x AAA