function microphone, you can have a more clear and safer call with your families and friends<br>- Supports <b>TF card external</b> function, keeps you away from the annoying cables, gives you a more convenient listening environment<br>- Very easy to set up and use, your Bluetooth is ready, your music is ready<br>- Bluetooth wireless design for connecting to any Bluetooth enabled smart devices<br>- Distortion is less than <b>1 percent</b>, reduce the loss of sound quality effectively<br>- Thoughtful TPE lanyard design, it can be hung on the bike and  enjoy music all the way <br>                 <strong>Design:</strong> Cool,Portable,Sport <br />             <strong>Compatible with:</strong> Mobile phone,TF/Micro SD Card <br />             <strong>Supports:</strong> Bluetooth <br />             <strong>Connection:</strong> Wireless <br />             <strong>Audio Source:</strong> Bluetooth Enabled Devices <br />             <strong>Color:</strong> Blue                               <strong>Bluetooth version:</strong> Bluetooth 2.1 <br />             <strong>Powlev:</strong> CLASS II <br />             <strong>Audio File Format:</strong> MP3,WAV <br />             <strong>TF Card Extension:</strong> 32G to the Max.(Not Included) <br />             <strong>Transmission Distance:</strong> W/O obstacles 10m <br />             <strong>Driver unit:</strong> 50mm <br />             <strong>Speaker Impedance:</strong> 4 ohm <br />             <strong>Standby time:</strong> Automatically enters sleep mode if ten minutes no operation  <br />             <strong>Freq:</strong> 180Hz-20KHz <br />             <strong>S/N:</strong> 80dB <br />             <strong>Distortion:</strong> Less than 1 percent                               <strong>Power Source:</strong> Battery <br />             <strong>Charging Voltage:</strong> 5V <br />             <strong>Charging time:</strong> About 4 hours <br />             <strong>Lasting Time:</strong> 7-10 hours ( 70 percent volume ) <br />             <strong>Battery Capacity:</strong> 1500mAh                                            <strong>Package weight:</strong> 0.446 kg <br />             <strong>Product size (L x W x H):</strong> 9.60 x 8.80 x 5.00 cm / 3.78 x 3.46 x 1.97 inches <br />             <strong>Package size (L x W x H):</strong> 19.00 x 12.40 x 5.50 cm / 7.48 x 4.88 x 2.17 inches                               <strong>Package Contents:</strong> 1 x TSBTOS - 03 Bluetooth Speaker, 1 x Bilingual Instruction in Chinese and English, 1 x 3.5mm Audio, 1 x USB Charging Cable                 <p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/03/30/1459331570118644.jpg" style="" title="1459331570118644.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/03/30/1459331568650207.jpg" style="" title="1459331568650207.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/03/30/1459331569340803.jpg" style="" title="1459331569340803.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/03/30/1459331571835910.jpg" style="" title="1459331571835910.jpg"/></p><p><img src="http://des.chinabrands.com/uploads/pdm-desc-pic/Electronic/image/2016/03/30/1459331571636732.jpg" style="" title="1459331571636732.jpg"/></p>