Meet one of the newest models of the Adesso Trackball product line, the Adesso iMouse T50. This device is cable-free by utilizing the 2. 4 GHz 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 (400-4800), the optical trackball provides superior accuracy and smooth motion, reducing hand movement and space. This mouse trackball is also easy to maintain - just push trackball outward from back, clean and push it back in place. Its ergonomically contoured 2\" large size trackball and adjustable leg stands further completes its ergonomic advantages, making your daily computing tasks more comfortable and stress-free. Wireless Technology Works up to 30 feet of wireless distance. Operates on 12 different channels, each with 65, 536 different IDs. Ergonomic Contour Design Minimizes forearm muscles from twisting and pains from Carpal Tunnel Syndrome. Universal Appeal Perfect fit for both right and left handed users. Programmable Driver The programmable driver has a friendly user interface that lets you change lighting options, different button assignments, and macros to each of the buttons. Built-in 2? Large Trackball with Optical Sensor Tracks accurately and precisely with less muscle movement for maximum comfort. Removal Trackball for Easy Cleaning Simply pop out the trackball and wipe away collected dust or dirt with microfiber cloth. Adjustable DPI Switch Adjustable cursor moving speed from 400-4, 800 DPI. Back/Forward Buttons Provides extra convenience for web surfing. Power On/Off Switch Maximizes your battery life up to 6 months. Micro-switch Equipped with its 10 million times lifecycle microswitch, the iMouse T50 provides durability and reliability for your needs. Personalized Comfort The adjustable leg stands offer different angle adjustments between 0 to 10 degrees. Whether you prefe