LED Slim Rechargeable Wireless Silent Mouse, 2.4G Wireless+Bluetooth5.0 Portable USB Optical Wireless Computer Mice with USB Receiver Features: Rechargeable: Built-in rechargeable battery, no need change battery. Special soundless design for the right and left buttons, wont disturb others. Colorful Light: 7 different color changes randomly while in use, offering soothing lighting, creating cool and fancy atmosphere for work and play. Energy Saving: The mouse will be in sleep mode in 8 mins of inactivity. And the LED light can be turned off by the bottom light switch. Silm & Portable: About 4.4 x 2.25 x 0.79 inch,, Perfect for travelling carry and it can be easily put into your laptop bag and ultra-space saving. Widely Compatibility: Works with Windows 2000/XP/7/8/10/Vista, Suitable for homes, offices, travel and more. The Latest 2.4G Wireless + Bluetooth 5.0 Technology Built-in 500MA lithium battery, charge for 2-4 hours, can be used for about half a year How to Use 1. Charge the mouse for about 2-4 hours before using it for the first time. 2. Take out, which is stored under the back of the mouse. 3. Insert the dongl into the USB port of your PC. 4. Turn on the mouse, the switch is at the bottom of the mouse. 5. Allow a few seconds for installing, no action needed, just wait. Then you can use it. Note 1. The mouse cursor will move slowly or stop moving when the mouse is low battery. Please charge it on time. 2. The blue light beside the scroll wheel will be on while charging, and then goes off when the mouse is fully charged. 3. Please use computer's USB interface to charging the wireless mouse. Package Includes 1 x Wireless mouse 1 x USB Charging cable 1 x USB receiver(stored at the mouse bottom)