Wireless mice suddenly become very dull may be due to the following reasons.
First of all, it may be caused by the low battery of the mouse, and the battery needs to be replaced in order to be used normally. Second, there may be interference with the wireless signal, such as other electronic devices around or insufficient signal strength, requiring adjustment of the distance between the mouse and the receiver or replacement of the receiver position. In addition, wireless mice also need to be cleaned and maintained regularly, otherwise dust and other substances may affect the sensitivity of the mouse.
If the above measures do not solve the problem, it is recommended to contact the manufacturer for repair or replacement.