The charging time of the K12 wireless Bluetooth speaker varies by model. Generally speaking, the charging time is between 2-4 hours. In the process of use, if you find that the audio power is insufficient and need to be charged, it is recommended to use the original charger to charge to ensure battery life and safety. At the same time, care should be taken to avoid long-term overcharge or long-term discharge in order to make full use of the battery life and protect the device itself. In the actual use and charging process, we should follow the instructions of the manual to achieve the best use effect and service life.