Bluetooth speaker + flashlight + radio + mobile power adapter: this bluetooth speaker has multiple functions. In addition to being a bluetooth speaker, it can also be used as a flashlight, can also listen to the radio, and can also be used as a mobile power source to charge mobile phones in an emergency.Bluetooth 5.0 Speaker: This bluetooth speaker uses a bluetooth 5.0 chip and built-in low frequency amplifier to achieve hi-fi surround sound, clear and beautiful highs and strong bass. This bluetooth speaker also supports AUX and TF cards.Flashlight function: This bluetooth speaker has three light modes: strong light, weak light and flash. Walking, cycling, or temporary power outages can come in handy at night.Radio function: This Bluetooth speaker is equipped with an expandable antenna and can be used as an FM radio. The bluetooth speaker has a hole through which you can connect the speaker to the bike stand. Or hang the bluetooth speaker and the gift hook on the backpack. Note: without bike rackPower bank function: This Bluetooth speaker is equipped with a rechargeable 3000 mAh lithium battery. The charging time is 1-2 hours and can be used for 15-20 hours. When the phone is out of power, it can be used as a portable power source to charge the phone. Note: In order to be able to use the power bank function, you must switch off the Bluetooth speaker function.