<p>This mini speaker is available in multiple colors. You can insert a USB flash drive or a TF card for music playback. With FM radio and 3.5mm audio input and output.</p> <ul> <li>It can insert TF card, U disk to play MP3 format music, with FM radio function</li> <li>The LCD screen can display the song playing time and the audio channel</li> <li>The aluminum alloy middle frame shell is oxidized and colored, and the wear resistance does not fade. A variety of colors can be selected</li> <li>Ultra-small size, only 5.2*4.8*4.8cm, mini portable</li> <li>Simple and intuitive button design without complicated operations. A telescopic antenna with a received signal, approximately 14.5 cm</li> </ul> <p><strong>Specifications:</strong></p> <ul> <li>Output power: 3W*2</li> <li>Frequency response: 200HZ-12KHZ</li> <li>Humidity test: 90-95% RH 24H</li> <li>Heat test: -25 -- +75degree</li> <li>RF: 220Hz±20%</li> <li>S/N ratio: 85dB±3dB</li> <li>FM: 87.0MHZ</li> <li>Item Size: 5.2 * 4.8 * 4.8cm / 2.05 * 1.89 * 1.89in</li> <li>Item Weight: 111g / 3.92oz</li> </ul> <p><span><strong>Note:</strong></span></p> <ul> <li><span>It can be used after 2 hours of charging (the first time charging is for 7-8 hours).</span></li> <li><span>To connect one end of the audio cable to the audio output port of computer or mp3, the other end to the back of the product. It can be used when turning on the player.</span></li> <li><span>Please use the USB charging cable of this product while charging, it can not be used as audio line.</span></li> <li><span>Make sure to turn off the sound before charging. Normal capacity charge time is 2 hours, please turn off the power after 2 hours.</span></li> </ul>