Introducing our powerful 40W HIFI Portable Wireless Bluetooth Speaker - the ultimate addition to your home theater sound system! Experience unparalleled stereo bass and crystal-clear sound with our 4 full-frequency speakers. With multiple input options including USB, TF card, and 3.5mm audio, you'll have endless ways to enjoy your favorite music, movies, and more. Plus, our Bluetooth V5.0 technology allows for a seamless connection up to 8-10m away. Designed with convenience in mind, our speaker features a micro charging port and can easily control volume, song selection, and playback. And with a 2000mA battery capacity, you can enjoy up to 3.5 hours of uninterrupted playtime. Upgrade your entertainment experience today with the BS28B speaker, measuring 550*50*50mm. Don't miss out on this must-have product - get yours now!