Once the DM13 is connected to a USB adapter, simply switch the D.MODE switch to the "ON" position, and the DM13 will be powered directly by the USB without consuming battery power, which can also better protect the battery life!

The FiiO DM13 Bluetooth Multifunctional Portable Stereo CD Player in black is a versatile device that offers a combination of CD playback, Bluetooth connectivity, and portability. With its sleek design and high-quality audio outputs, it is perfect for music lovers on the go. The powered Type-C or lithium battery ensures long-lasting use, making it convenient for travel or everyday use. Enjoy your favorite music with this compact and stylish CD player from FiiO.