<ul> <li> <p>Bluetooth speaker makes you free from troubles of cables, very easy to use</p> </li> <li> <p>Special bulldog design makes your speaker different to others</p> </li> <li> <p>With transmission distance is up to 10meters</p> </li> <li> <p>Support playing audio files in MP3 and WMA format through TF card and U disk</p> </li> <li> <p>With FM radio function, built-in 87.5-108MHz FM digital radio module, can automatically store 50 radio stations</p> </li> <li> <p>Built-in rechargeable 800 mAh battery, it could last a whole day when you listen to music</p> </li> <li>52mm speaker unit, the sound is clear, loud and undistorted, bring excellent stereo music</li> </ul> <p><strong>Specification:</strong></p> <ul> <li> <p>Specifications:</p> </li> <li> <p>Battery : 500MAH 18650</p> </li> <li> <p>Bluetooth chip: Jerry</p> </li> <li> <p>Bluetooth version: 4.2</p> </li> <li> <p>Charging time: 4 hours</p> </li> <li> <p>Frequency: 50-20KHZ</p> </li> <li> <p>Audio frequency: 87.5-108MHz</p> </li> <li> <p>Speaker parameters: 52MM full frequency magnetic horn</p> </li> <li> <p>Output power: 3W</p> </li> <li> <p>Signal to noise ratio: 80db</p> </li> <li> <p>Communication distance: 10m</p> </li> </ul>