[Powerful 20W Output]Experience room-filling sound with the YESIDO YSW39's impressive 20W output, delivering high-volume audio performance. [Enhanced Bass Performance]Powered by a 7.4V battery, this speaker produces deeper, richer bass tones for a more immersive listening experience. [Versatile Playback Options]Enjoy music through multiple modes including Bluetooth-compatible, TF card, USB, AUX, and TWS for seamless connectivity. [Dynamic RGB Lighting]Featuring vibrant RGB lighting effects that sync with your music, adding a visual dimension to your audio experience. [Stable Bluetooth-compatible 5.3 Connection]Equipped with the latest Bluetooth-compatible 5.3 technology for more stable connections and lower power consumption. [Long-Lasting Battery Life]With up to 5.5 hours of playtime at 80 percent volume, this speaker keeps the party going longer. Specifications: Material: ABS, Silicone, Fabric Mesh Bluetooth-compatible Version: 5.3 (Single Channel) Battery Capacity: 7.4V or 1200mAh (18650 battery with protection board) Charging Time: Approximately 4 hours Playtime: About 5.5 hours (at 80 percent volume) Input: 5V or 1A Speaker Size: andPhi 66mm, 3andOmega , 20W Power Output: 20W Features: TF or USB or TWS or AUX or BT or RGB or Calling function