<ul> <li>Supports TF card/U disk/MP3 format/FM radio function conversion</li> <li>Supports two power supply modes: 18650 battery (included) and BL-5C lithium battery (not included)</li> <li>Suitable for any age people, especially for the elderly</li> <li>Using large silicone keys, 10 number keys, you can freely choose tracks</li> <li>With a 3.5mm headphone jack, easy to use</li> <li>With a large digital display screen, it is clear at a glance</li> <li>Surface UV paint process, exquisite and durable</li> <li>High-quality speaker, bring loud and good sound</li> <li>With bright LED light, convenient to use at night</li> </ul> <p><strong>Specification:&nbsp;</strong></p> <ul> <li>Power supply: DC5V</li> <li>Output power: 3W</li> <li>Frequency Response: 150Hz - 20KHz</li> <li>Signal-to-noise ratio: &ge;80dB</li> <li>Impedance: 4&Omega;</li> <li>Output: 3.7V~4.2V+0.09V</li> <li>Input: 5V</li> <li>5C lithium battery capacity: 600mAh (not included)</li> <li>18650 battery capacity: 1500mAh (included)</li> <li>Playing time: 4-8 hours</li> <li>Distortion: &lt;10%</li> <li>Material: Plastic</li> <li>Weight: 260g</li> </ul>