?Plug-and-play wireless?: Get a reliable connection from a convenient nano receiver that stays in your computer. Smart sleep mode help you save the energy of battery.1 AA battery needed (not included in the package). ?Ultra-Durable Build?: 5,000,000 clicks lifespan. 2.4GHz Wireless provides a powerful connection, increases working distance of up to 10m. USB Nano Receiver can be stored within the back of the mouse. ?Portable and Pocket Size?: Featuring slim shape(4.2*2.3*1.5in/107*59*38mm) which is twice thinner than ordinary mice, this portable wireless mouse is perfect for travelling. It can be easily put into your backpack or pocket. ?Adjustable move speed?:3 adjustable DPI levels ,800/1200/1600?easily change the sensitivity of the cursor and fit your use well. ?WIDE COMPATIBILITY?: Work with Windows 98 / Me / 2000 / XP / Vista / Win 7 / Win8 /10/Vista Mac OS or latest. Ideal for work or entertainment in home and office.