Product information- Name: Portable Bluetooth Speakers- Working distance: 10M- Wireless: V5.1- SNR: 90db- Normal volume playing time: 8H- Frequency response: 120HZ-20KHZ- Charging time: about 3Hrs- Support HSP//HFP(Handsfree profile), with HANDS-FREE functions.- Support: L2CAP/A2DP/AVCTP, can receive AUDIO signal and control the AUDIO deviceFeatures:- International advanced wireless chip and circuit design techniques, support all wireless devices. With AUX line In, can directly connect the outside devices, for example, tablet PC/TV/cell phones.- With the FM function can search radio station broadcast automatically; With a HI-FI speaker, to make sure the clear and bright sound.- Supporting Micro SD card and USB card, play MP3 format audio, and the wireless working distance is 10 meters, it will close automatically after 30 mins if disconnect Wireless.- A variety of flashing LED lights with different colors, color lights flash follow the melody and support TWS.- The portable speaker is easy to hold and store, and resistant to dust, and debris. Its utility loop allows you to hang it on almost any surface.Warm tips:- NOTE: In the FM mode, put in a micro charging cable to get a better FM radio station.- If you have any questions about the use of our wireless speaker, please feel free to contact us, we will provide you with satisfactory service.