Adopting latest bluetooth V5.0 technology, stable signal transmission, powerful audio decoding, operating distance up to 10 meters Dual high definition speaker drive units, 360 degree surround powerful bass and stereo HiFi sound effect Built-in sensitive HD microphone, handsfree support to answer the phone calls even if it is playing music when you're driving car Integrated function control panel for song switching, playing/pausing music, answer phone calling, volume control, etc Built-in 3000mAh lithium battery, long using time up to 6 hours With USB charging port, convenient to charge it by power bank, PC, etc Easy to carry with the rubber handle, great for outdoor activities, sports, etc