The built-in omnidirectional and highly sensitive microphone supports Bluetooth to connect with mobile phone for voice calls, and contains noise reduction technology to deliver clear voice. It can also be used as a car phone in the car (please put it in the right place, so as not to affect driving safety) Shock effect experience, intense and cheerful game, movie shock experience, and experience The 360 degree surround sound field is like being on the spot. The metal diaphragm is full of weakness and can carry the powerful bass. You can feel the surrounding air vibrate with it Optimized sound cavity and customized metal diaphragm , Make Bluetooth speaker release pleasant sound A of colors flash with the music, no music when slow flash, so that life is no longer monotonous Communication:AUX, bluetooth Speaker Type:Portable Power Source:Battery Number of Loudspeaker Enclosure:1 Audio Crossover:Full-Range Channels:2 (2.0) Input Power(W):less than 25 W Bluetooth Version:5.0 Support Memory Card:Yes Built-in Microphone:Yes colour:Black Material:ABS size:6 x 6 x 7.7cm Package Contents: 1 x Wireless Stereo Speaker Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.