-Sound power: Equipped with two 3-inch speakers and a maximum power of 20 watts, this speaker offers a powerful and clear audio experience, with deep bass and impressive sound quality. Reproduction options: USB port: to play music from your storage devices. MicroSD slot: insert your card and enjoy your music without additional connection. 3.5mm auxiliary input: for a wired connection with devices such as cell phones, tablets, and computers. Durable energy: With a 7.4V/4000mAh battery, you will have long hours of continuous playback. In addition, its Type-C charging port allows for fast and efficient recharging.