Theo&Cleo Blue 2.4G 800/1600 dpi Wireless Optical Comfort Mouse With USB Nano Receiver Designed for Web Scrolling An ideal companion for PC and Laptop use,suitable for home, office or out on the road Modern and ergonomically design for easy and comfortable holding with adjustable cursor speed This wireless mouse can works on most surfaces without using a mouse pad and is also of high quality and accuracy Plug and play, no need to install driver USB receiver is included, which can be stored neatly inside the mouse when not in use