𝐄𝐫𝐠𝐨𝐧𝐨𝐦𝐢𝐜 𝐃𝐞𝐬𝐢𝐠𝐧 – Take the strain and discomfort off your wrist and arm with the comfortable ergonomic layout of the mouse which also helps provide relief for carpal tunnel syndrome. The attached palm rest helps provide a relaxed grip without any discomfort even during extended computing sessions. 𝐒𝐢𝐝𝐞 𝐓𝐡𝐮𝐦𝐛 𝐒𝐜𝐫𝐨𝐥𝐥 𝐖𝐡𝐞𝐞𝐥 – Conveniently placed side thumb scroll wheel allows you to move left/right on the page easily. Perfect for when you’re using designing software, or balancing excel spreadsheets. *Note: If side scroll function isn\'t working, visit our website, type jtd-2970 in the search bar, and download the mouse drivers. 𝐌𝐨𝐮𝐬𝐞 – With the ability to choose between 3 adjustable DPI levels (800/1200/1600), set the mouse cursor sensitivity to your needs easily with the press of the DPI button. 𝐖𝐢𝐫𝐞𝐥𝐞𝐬𝐬 𝟐.𝟒𝐆𝐡𝐳 – Providing up to 32ft. working range, simple plug the included USB receiver in to the computer, place the included battery inside the mouse and turn it on, forget about any additional cables or wires, and enjoy convenience without any hassle! 𝐅𝐫𝐞𝐞 𝐋𝐢𝐟𝐞𝐭𝐢𝐦𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐮𝐩𝐩𝐨𝐫𝐭 – All J-Tech Digital products include a one-year manufacturer replacement warranty and free lifetime technical support from our customer support team located in Stafford, TX. Support is available from 9AM – 6PM CST, Mon – Fri. Contact information available on our seller page.