Please read the user manual for other detailed using methods.<br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729306248.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729308723.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729318275.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729355607.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729371251.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729402798.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729412806.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729426401.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729449657.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" /><br><br><img src="http://des.chinabrands.com/uploads/2015/201508/heditor/201508071729467000.jpg" alt="F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc" />                 <strong>Model:</strong> F7 <br />             <strong>Design:</strong> Portable,Stylish <br />             <strong>Compatible with:</strong> Tablet PC,MP4,MP3,PC,Mobile phone,MP5,Laptop,TF/Micro SD Card <br />             <strong>Supports:</strong> Bluetooth,Microphone,Hands-free Calls,TF Card Music Playing <br />             <strong>Functions:</strong> Stereo,AUX Function,Songs Track <br />             <strong>Connection:</strong> Wireless <br />             <strong>Interface:</strong> Micro USB,3.5mm Audio,TF Card Slot <br />             <strong>Audio Source:</strong> TF/Micro SD Card,Electronic Products with 3.5mm Plug,Bluetooth Enabled Devices <br />             <strong>Material:</strong> Metal <br />             <strong>Color:</strong> Black,White,Blue                               <strong>Bluetooth version:</strong> V4.0 <br />             <strong>Audio File Format:</strong> WMA,MP3,WAV <br />             <strong>Transmission Distance:</strong> W/O obstacles 10m <br />             <strong>Total Power:</strong> 3W RMS <br />             <strong>S/N:</strong> 70dB                               <strong>Power Source:</strong> USB,Battery <br />             <strong>Charging Voltage:</strong> 5V                               Array             <strong>Package weight:</strong> 0.333 kg <br />             <strong>Package size (L x W x H):</strong> 13.00 x 11.00 x 6.20 cm / 5.12 x 4.33 x 2.44 inches                               <strong>Package Contents:</strong> 1 x F7 Multifunctional Portable Mental Handsfree Wireless Bluetooth Speaker with TF Card Slot 3.5mm Audio Cable USB Data Line for Smartphone PC MP3 MP4 etc, 1 x USB Data Cable, 1 x 3.5mm Audio Cable, 1 x Hanging Buckle, 1 x Bilingual User Manual in English and Chinese