Product overview:<br /><br />This machine is a beautifully designed and portable bluetooth stereo speaker・ which was used to home・ outdoor travel・ offices and so on. Whenever can enjoy the music・ to live the perfect and supper sound for your phone and Ipad as well as other bluetooth devices.<br /><br />Function:<br />Suitable for all phones and tablets with bluetooth. Etc<br />English voice prompts system<br />Bluetooth pairing・ no need to enter a password・ automatic connection<br />Bluetooth wireless support lossless music.<br />Low power construction・ the use of class D digital amplifier chip<br />Long battery life・ up to more than about 20 hours of continuous play<br />Built-in double bass system・ configure a pair of full-range speakers・ the bass sound more shocking<br />Built-in microphone・ support incoming and outgoing calls<br />Insert TF card support MP3 player<br /> <br />Lights introduction:<br />Red light flash long: changing・ will turn off when fully charged<br />Blue light flash fast: waiting for paring<br />Blue flash slowly: connection of phone with bluetooth device<br />Buttons instructions:<br />1. >] paly/pause/receive calls<br />2. <<] previous piece・ long press for reduce volume<br />3. >>] Next piece・ long press for increase volume<br />4. M  mode button to switch bluetooth ・ AUX audio input・ TF card・ U flash mode<br />5.   Power on/off<br />6. Working light<br />7. Charging light<br />8. Charging slot<br />9. Reset ・press to fo