i T40 2.4GHz Wireless Ergonomic Programmable Ambidextrous 4800dpi Optical Trackball, 10m Wireless Range The product is shipped based on the color or size of the main image of the product page. one of the newest models of the trackball product line, the i T40. It incorporates the claw grip design where each user can rest the entire hand over the mouse. The trackball location allows users to move the cursor by rotating the trackball with their fingertips to reduce the need of hand movement. It is cable-free by utilizing the 2.4GHz radio frequency technology, offering a wireless range of up to 30 feet. It's also fully programmable, meaning every mouse button can be customized to your preferred function with its programmable driver. With its 5 levels of DPI resolutions (400 to 4800), the optical trackball provides superior accuracy and smooth motion, reducing hand movement and space. mouse trackball is also easy to maintain - just push trackball outward from back, clean and push it back in place. Its ergonomically contoured large size trackball further completes its ergonomic advantages, making your computing tasks more comfortable and stress-free. Wireless Works up to 30 feet of wireless distance. Operates on 12 different channels, each with 65,536 different IDs. Ergonomic Contour Minimizes forearm muscles from twisting and pains from Carpal Tunnel Syndrome. Built-in 1.5-inch Trackball with Optical Sensor Tracks accurately and precisely with less muscle movement for maximum comfort. Programmable Driver The programmable driver has a friendly user interface that lets you change lighting options, different button assignments, DPI Sensitivity, and macros to each of the buttons. Removable Trackball Allows for easy cleaning. Appeal fit for both right and left handed users. Adjustable DPI S Adjustable cursor moving speed from 400 to 4800 DPI. Back/ Buttons Provides extra convenience for web surfing. Micro-s Equipped with its 10 million times lifecycle micros , the i T30 provides durability and reliability for your needs. On/Off S izes your life up to 6 months. Nano Receiver Tiny and convenient to plug into to your laptop or tablet. - - Type: Wireless - Resolution: 5- s, 400/800/1600/2400/3200/4800 - Sensor: Optical - Hand ation: Ambidextrous - Buttons: 7 Buttons (Left/Right/ Buttons, Back/ Button, DPI UP/Down S , Scroll Wheel) - 2.4GHz Wireless - 10m Wireless Range - Built-in Auto-sleep Mode, Extends - Illuminated LED - Ergonomic - Adjustable DPI S - : 2x AAA Batteries - Connectivity: USB Wireless Receiver - Dimension: 168 x 115 x 50 mm - Trackball Diameter: 40 mm (1.5-inch) - Operating System : 2000/XP/Vista/7/8/10 - Package Includes: i T40 2.4GHz Wireless Trackball , USB Wireless Receiver, 2x AAA Batteries, t Guide