BMW Yoga Music Mug

1, Without inserting TF card, open the [ON / OFF] switch, issued a "boom" sound, the machine enters the USB soundcard mode. 
2, insert TF card, press the [ON / OFF] switch, the computer will pop up a "Removable Disk" drive, USB card reader mode is entered. 

3, after the speakers connected to the computer, the 

MP3 songs stored could be played when the computer is on. 

VII.charging use method 
Plug the power cord into the device [USB / AUX] jack and the other end of the USB into the computer's USB port, or connect a standard 5V 500mA charging interface, the charge in the red light", when full "red light" is off. 
The machine built overcharge protection circuit can be connected to a computer or charger for a long time, about three hours to fully charge the battery; battery usage would differ time to time due to the different volumes. 
VIII.Low battery 
     When the power is low, the system will automatically adjust the maximum volume output, and play "battery voltage is low, please charge (Voltage is insufficient, please charge)", the system will automatically shut down, then please charge; If not using the machine, at least once a month charge, you can protect the battery to extend battery life.