Bluetooth Speakers,Guojia Portable Mini Wireless Stereo Speaker with Colorful LED Lights,Build in Microphone Support Hands-Free Function TF Card. 1. Differently colorful lighting design, twinkle with the rhythm of music bring you excellently new night life. 2.The piano, with small , exquisite and painting appearance, are portable with even only one hand. featured of light but fine texture like a night lamp, you can put it into your backpack, bag or pocket wherever you go . There is also slip-resistant design at the bottom of speaker , so please be free to use. 3.Support for hands-free Bluetooth phone call , vocal dialing-up , you can enjoy clear dialogue Nomatter how many calls you are proceeding at same time. 4.Acceptable for TF card, automatic model selection, card-insert playing , you can be free to switch music from one to another, support mp3 format, at the same time it can keep the record where you have played ,when your device is turned off. 5.Universal interface for charging and audio input , support for simultaneous execution of charging and playing . With the characteristic of multitask , only a simple operation can enable sound to become a computer stereo, MP3 speakers, etc..