Wireless Mouse, 2win2buy Rechargeable 2.4G Optical Sensor Ultra Slim Cordless Mice with USB Receiver Less Noise for PC, Laptop, Computer, Notebook BUILT-IN BATTERY - 2.4 GHz wireless mouse,built-in battery,easy to charge by micro usb cable,no more need for extra AAA battery.Note:USB Nano Receiver is stored within the back of the mouse.Please keep the mouse power switch in "ON" position when charging EASY OPERARTION - comes with a nano receiver inside the back of the mouse. 3 adjustable DPI levels (800-1200-1600 DPI) enables you to control the speed of the mouse freely. COMFORTABLE AND ERGONOMIC DESIGN - It's contoured shape and comfortable materials ensure maximum comfort during those long gaming sessions. Ergonomic design, to create the ultimate game concept, long-term use without fatigue. WIDE COMPATIBILITY - compatible with most system including Windows, Mac and Linux. Fit for Notebook, PC, Laptop, Computer, Macbook and other device with USB interface. 100% GUARANTEE - If you have any problems FOR THE PRODUCT, please feel free to contact with us, we will refund your order in full. Add to cart now because you literally risk nothing.