Specifications: 1. Wireless transmission distance: about 10m 2. RF: 2402mhz-2480mhz 3. RF operation channels: 16, automatic frequency hopping 4. Rated voltage: 3V 5. Rated current: 12-20ma 6. Key stroke: 0.8mm 7 . Keystroke force: 60-70 ± 10g 8. Max. acceleration: 14 ft / S 9.USB：ver 1.1/2.0 System requirements: 1. Use Windows 2000 / XP / Vista / Linux / win 7 / Mac operating system 2. One USB available port. characteristic: 1. Built in mouse memory, there is no need to recode after replacing the battery. 2. Optical positioning, more accurate positioning. 3. Intelligent power saving technology, the service life of an alkaline battery is up to six months 4. Smart connection, no coding, plug and play. 5. Ergonomic design, comfortable grip. 6. Sleep control, no connection sleep, more power saving. 7.800dpi/1200dpi cursor speed is adjustable. 8. Shortcut buttons can be used to browse the Internet or applications, and easily use the "forward" and "back" functions on the toolbar 9. Power switch, when the power supply is not fully used. Package includes 1 * mouse matters needing attention: 1. The operating distance is closely related to the environment. 2. The battery life may vary depending on the individual's habit of using the mouse. 3. If the mouse fails, please check the battery power and replace it if necessary 4. If the mouse is not used for a long time, it will automatically shut down and enter sleep mode to save power. To wake it up, press the right or left key. 5. Do not waste the battery and put it into the fire. Put the battery in the battery recycle bin. 6. The product does not contain batteries, and 2 * AAA batteries are required. 1. We maintain a high level of responsibility for our customers and are as responsive as possible to the needs of our guests. 2. If you have any questions about our products, please contact us in time, we will solve it for you immediately! 3. Due to the different display devices, the color of the products may have some discrepancies, hope you can understand. 4. Due to the different photo shooting angle, the actual shape and size of the product may not be consistent with the picture, please refer to the description of the product size, everything shall be subject to the physical object received. 5. Thank you for your purchase, we sincerely wish you happy every day.