POWERFUL SOUND - The speakers offer mind-blowing sound with a powerful 36W peak power output quality with absolute neutrality and an expansive soundstage. Gives clear stereo and stunning acoustics that fill the room with sound COMFORTABLE AND CONVINIENT - Simple and futuristic design allows you to not bother with the volume and bass controls because they are located at the front side, so making it easier to get to them and adjust the volume or bass settings. LINE-IN CONNECTION FOR TABLET, PHONE OR MP3 PLAYER - Alternatively referred to as audio in and sound in, the line in or line-in is a jack found on computer sound cards that enable a user to connect an external audio device. These devices include CD players, audio mixers, musical instruments, and microphones. You can connect a tablet, phone or mp3 player so you can listen to the music on those devices without disconnecting USB speakers from PC. USB POWERED - The speakers are connected by USB cable, which makes them convenient, wherever you take them. They are ideal to take them on a trip, and you do not have to look for outlets or alternative methods of their power. Also, their advantage is that they do not occupy the outlet in the home environment. HEADPHONE CONNECTION, WARRANTY - These speakers have the ability to connect headphones to them. If the device breaks down or turns out to be faulty, you can return your money within 24 months after purchase. We try to do our things in such a way that no incidents will upset you.