Super Quality Crystal Clear Sound: Deep bass HD loud 6.5 inch speaker unit provide you with crystal clear sound and strong bass without distortion even at highest volume. Advanced BT Technology & TF Card & AUX & USB Drive Music Play: Adopts advanced BT 5.0 technology, range more than 10m, you can easily connect with almost all BT-enabled devices. Via the TF card slot, 3.5mm audio port and USB port, you can connect the devices without BT function. Built-in Microphone & FM Radio: Built-in microphone lets you enjoy hands-free calls; built-in FM Radio, perfect for travel and hiking, superlight and easy to fit in your backpack, baggage. Portable Design & Large Capacity Battery: With a adjustable webbing strap, easy to carry outdoor. High capacity rechargeable 1500 mAh lithium battery supplies up to 4 hours of playtime at 2/3 volume on a full charge. Thoughtful design: LED colorful lights, making it cool and funny when outdoor dancing or travelling. With portable handle, easy to take out with you. WeChat/Alipay receiving payment, Good assistant for merchants.