Noiseless Durable Mouse -- Trendy design and responsive buttons, provides the soft right and left click with noiseless buttons, work efficiently without disturbing others. Moreover, our mouse has 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 batteryNOT included Just plug the Nano USB receiver into your computer. With 2.4GHz wireless technology, the wireless connection is reliable within a 45ft/15m distance. 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 on1.3mA; level2: 1min50uA; level3: 30 mins30uA. 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] Ergonomic Design & Gift -- The newest Heightened design not only upgraded the style of the traditional mouse, but it also made the mouse fit hands better, relieving wrist pain for those who have been working on a computer for a long time. The simple small design of the product allows you to take it anywhere for work, suit for both right and left hand. There are different color options. This will be a special gift for your lover, friend, or child to show your love.