?????Noiseless Durable Mouse – Trendy design and responsive buttons, provides soft right and left click with noiseless buttons, work efficiently without disturbing others. Moreover, our mouse have been made by the standard of 5 Million Times Keystroke Test to make sure the quality of durability. ?????Easy to Use & Stable – Plug & Play! Insert an AA battery(NOT included) Just plug the Nano USB receiver into your computer. With 2.4GHz wireless Technology, the wireless connection is reliable within 45ft/15m distance. ?????Ergonomic and Comfortable Design -- The newest Heightened design not only upgraded the style of traditional mouse, but it also made the mouse fit hands better. The Ergonomic design allows you to work comfortably & loosen. Simple Small design of the product allows you to take it anywhere for work! ?????Smart Power-saving Engine -- Smart Power-saving management has been implemented on this product. 3 levels of Auto sleep mode could be triggered. When the mice rest more than 3 sec, level 1 of auto sleep is on(?1.3mA); level2: 1min(?50uA); level3: 30 mins(?30uA). Individual Power Switch The smart engine allows the mice to have standby life up to 18 months!!! ?????Sensitivity Adjustable & Widely Compatible -- 3 Adjustable DPI setting 800/1200/1600. Set the sensitivity of your mice any time by just pushing the DPI button on it. Alone with Accurate optical tracking, AHGUEP mice work smoothly with high precision. Our mouse is also widely compatible with various systems, simply plug in the nano USB receiver to your device![Note: We only have USB receivers, so the MacOS computer system needs to be used with USB adapters]