The solar crystalline silicon plate converts light energy into electric energy under the sunlight and stores it in the battery. The energy is clean and environment-friendly, and the endurance capacity is doubled. Even if there is no sunlight, the Bluetooth sound will quietly return to the blood in a bright environment, and the power will be sufficient next time.Four playback modes are available when turned on
FM radio playback
TF Card playback
USB flash disk playback
Bluetooth play