Multiple functions in a compact design, with Bluetooth wireless connection, USB/TF card playing, aux external audio source, micro-USB connection to computer with a single line, large screen display of clock/alarm clock, M260 is a versatile music player at your home. Latest Bluetooth Technology, Further Transmission The Bluetooth 5.0 is adopted with more wireless devices and stronger anti-interference ability. The bluetooth signal can reach up to 30 meters, for you to enjoy unlimited music. Intelligent Sensors, For Adjustable Brightness You will never worry about the speaker's light when sleep. The light-sensing system automatically adjusts the screen's brightness in response to the environment, and a single press of the button can turn off the screen for you to fall asleep.