Parameter                                                                                                      <br>battery voltage:3.7V 4000mAh<br>Charging time :8hour<br>Loudspeaker size:40mm*24Ω 3W<br>Product size:160*60*36mm<br>Function Introduction                                                                                       <br>1.The bluetooth connection <br>Computer connection:first of all,the computer needs to have built-in bluetooth,don't need an external bluetooth adapter,and updates the bluetooth  the bluetooth speakers,computer search bluetooth audio devivce name;JLBT,matching can achieve bluetooth play after the connection is successful.<br>Mobile phone connection:open the phone's bluetooth function,search the bluetooth audio device name:JLBT,matching after the connection is successful can be palyed out and calls hands-free bluetooth function.<br>2.The TFcard play:playing songs in MP3 format which saved in TF card.<br>3.The LINE IN function:connnection device 3.5MM audio interface,easy to complete with PC/IPOD/PHONE/MP3/MP4R perfect docking(short press the "M" key to switch to the LINE-IN mode).<br>4.Radio mode:short press the "M" key to switch to radio mode,long press the "pause‘ button can realize automatic radio channel,after the success will automatically play.<br>5.The power bank:device connect<br>Package Includes:<br>1x Bluetooth Speaker<br>1x Audio USB charging cable<br>1x Retail box<br /></p> <br /></p><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-1-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-1-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-2-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-2-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-3-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-3-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-4-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-4-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-5-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-5-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-6-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-6-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-7-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-7-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-8-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-8-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><img src="https://ipx.image-gmkt.com/imageproxy/?src=https%3a%2f%2fcontestimg.wish.com%2fapi%2fwebimage%2f553469a40ed2a12b818adeba-9-original.jpg&scw=-1&remake=M" alt=""width="800" noproxy onerror="this.src='https://contestimg.wish.com/api/webimage/553469a40ed2a12b818adeba-9-original.jpg'; $(this).attr('onerror','');" ><p style="text-align: center;"><p style="text-align: center;">