? ? 5-LEVEL ADJUSTABLE DPI ?? 1?? 5-level DPI settings (800/1200/1600/2000/2400) to meet your multiple needs, either for daily work or gaming. The factory default is 1200DPI, with DPI gear indication,which will indicated the current DPI gear speed by LED flash times (1/2/3/4/5 times). 2?? 2 kind polling rate adjustment :125Hz/250Hz?the factory default is 125Hz. Press the right button + the middle buttom for 3 seconds to switch (during the switching process, LED will flash 5 times) ?? USB PLUG AND PLAY & STABLE CURSOR ?? USB Nano Receiver can be stored within the back of the mouse, can suport usb plug and play. Besides, 2.4GHz Wireless provides a powerful, reliable connection, transmission distance up to 33ft (10m) .Which eliminated delays, interference, accurate orbit & fast data transmission . Great wireless mouse for home and office. ?? ULTRA-DURABLE BUILD & ERGONOMIC DESIGN??E-YOOSO Computer Ergonomic Wireless Mouse is made of skin-friendly rubber oil and ABS plastic. Absolutely non-toxic and safe and convenient. Super durable, ergonomic PC mouse with perfect performance at a keystroke of 5,000,000 clicks! ?? POWER SAVING MODE?? The wireless mouse with long battery life due to it come with smart auto sleep mode, when lower power consumption, the mouse will enter the automatic sleep state to save power if you don‘t use it for 8 minutes,then click mouse runs on again. ? ?UNIVERSAL COMPATIBILITY & WIDE USE?? The wireless optical MacBook mouse is compatible with Windows XP, Vista, Linux and Mac OS (version 10.4 or higher). Note: Sided buttons are not functional in IOS system. As well as compatible for PC, laptop, Macbook and more. Great optical computer mice for various activities !