About the projectHigh-fidelity Stereo Headphones: Upgrade bluetooth headphones to give your favorite music an almost concert hall feel, as if you're watching it live. Provides listeners, audiophiles and home audio enthusiasts with high quality sound reproductionUnbeatable comfort headphones: Made from the softest memory protein foam, the earmuffs offer a day's worth of comfort. The adjustable headband and flexible earmuffs easily fit into any head shape without putting pressure on the ears. Its foldable and lightweight design makes it the best choice for college students for travel, exercise and daily useWide compatibility: Earmuffs with microphones can be paired by pressing the multifunction button for 2 seconds. Wireless headphones are compatible with all bluetooth enabled devices. With the built-in microphone, you can easily conduct hands-free calls or face-to-face meetings while working from homeWarranty and support: Package includes foldable deep bass headphones, USB charging cable, and user manual. 30 days free return and 18 months warranty are our guarantee, any questions during use, please feel free to contact us