E-3lue EMS136PUC Horizon 1750 DPI 2.4GHz LED Mobile Wireless Optical Mouse The aligned lighting pattern at the peripheral can be on and off to suit your needs. Blue illumination is released from the mouse to create a fascinating effect. Plug the wireless mini receiver into the USB port and wait for a few seconds for activation Three levels DPI with 500/1000/1750 are available to let you enjoy clicking and responding more accurately. It is with ultra-slim body which is highly portable and convenient. To use it at home or take it out, you can do as you like. The advanced 2.4 GHz wireless technology is adopted to transfer messages within the range of ten meters. Hassles brought by the wired mouse can be avoided.