Products keep you comfortable.
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<br />Features: 
<br />1, Advanced international Bluetooth chip and circuit design, support most Bluetooth devices.  
<br />2, With FM function, can search radio station broadcast automatically.   
<br />3, With Hi-Fi speaker, bring clear and bright sound. 
<br />4, Mini and fashion design, support TF card.   
<br />5, Dual power supply by mini USB charging/BL-5C battery, smart and fast charging.   
<br />6, Play music after pairing with your Bluetooth device, such as mobilephone, MID, TV.   
<br />7, Built-in microphone for hands-free phone call.  
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<br />Support: Computer, Ipad, Mobilephone, Bluetooth, TF Card, Volume Control
<br />Function: Stereo
<br />Interface: Micro USB port, Power charge Port
<br />Audio Source: Bluetooth Enabled Devices
<br />Bluetooth Version: V2.0+EDR
<br />Loudspeaker output : 3W RMS
<br />Operation range: up to 15 meters
<br />Function Key:Volume +/-, Dial up/Hang up
<br />Volume adjusting: long press the " + & -" key
<br />Song switching: shortly press the " + & -" key
<br />Frequency response: 100Hz to 20kHz
<br />Signal-to-noise:  70dB
<br />Distortion:  1.0%
<br />Built-in rechargeable Li-ion battery: 300-400mah
<br />Playback time: 2-4 hours (Depends on different voice volume that you use)
<br />Output: 3W
<br />Input: DC 5V
<br />Power supply: USB port
<br />Product Size(L*W*H): 78*78*78mm
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<br />Package included:
<br />1 * Speaker
<br />1 * USB cable
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<br />It's hoped that you enjoy it.