<p>Low voltage, low power consumption, power amplifier IC, quality, low distortion</p> <p>Built-in 180mAh battery, no external power supply required, offers one and a half hours of playtime at maximum volume or around 2 hours at 50% volume</p> <p>Comes with an audio cable at the bottom of the speaker. Equipped with a USB charging cable</p> <p>Unique design - retractable speakers. Small and light, hang hole design, easy to carry</p> <p>Suitable compatible with , MP3, MP4, MP5, cell phones, computers and other devices with a 3.5 mm audio </p> <p>Colour:black</p> <p>Material:Silicone + metal</p> <p>Size:5.2 x 3.8cm</p> <p>Package Contents:</p> <p>1 * Loud Speaker</p> <p>1 * USB Cable</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>