Bluetooth 5. 0 1. Built-in Bluetooth wireless transmission, do not disturb function. 2. Support USB flash drives. Power supply: DC5 Voltage 3. Support TF card playback. 4. Support 3.5 mm audio cable playback. 5. Support FM function. 6.2 sets of alarm clock and snooze function. 7. Temperature display 8. Mobile phone holder.