bout this item 【MAGNETIC TOP COVER, RGB BACKLIGHT】Attoe transparent mouse's top cover and body are connected by a strong magnetic adsorption, not easy to slip off. The top cover and the body are automatically and accurately aligned, “click”, the top cover and the body fit in seconds. There is a RGB water-cooled light band inside the mouse, more shining at night. 【BATTERY DISPLAY】This bluetooth mouse comes with a battery display, there are 4 small lights on the battery display, you can check the remaining battery level of the mouse at any time, say goodbye to battery anxiety.