A full size wireless mouse with more comfort and extra controls so you can do more, more easily Crown glassy go technology ~ Mouse can work on all normal operating surface including glass surface Advanced 2.4ghz wireless ~ fast data transmission, no delays or dropouts enjoy the convenience and freedom of Crown cordless 2.4Ghz wireless mouse Plug and play ~ Nano receiver stored inside the mouse Integrated Thumb buttons ~ Enjoy more control within your reach, move quickly backward and forward through web pages and application Advance power management ~ ON/OFF button, decrease power consumption during operation and with sleep mode, can save up to 25% power consumption DPI button 800/1600 ~ Responsive and smooth cursor control with adjustable DPI button.