Shocking Bass - Have you ever loved a song because of the bass part? Caution! Your favorite song may sound differently awesome. 10mm PEEK+PU dynamic drivers provide high-quality stereo with extra bass, mellow vocal and surprising treble for music, movies and phone calls. Better Sound, Less Cost - Breaking the limits of hardware performance and achieving extreme sound quality comparable to those of major brands at only 1/6 of the price. This is not bragging, this is the artwork of a team with experts that have been in the audio industry for more than 30 years. Comfortable Fits Even You Have Small Ear Canal - Combining bionics and ergonomic design, A2 is suitable for most people's ear canals. We included 4 sizes of eartips, so even if your ear canal is small, you can wear it comfortably. It won't feel uncomfortable even if you wear it for a long time. Say Goodbye to Frequent Charging - Every single earbud can be used together or individually for 5 hours of playing music, and with the charging case, it extends 25 hours of playtime. It is more than enough to listen for a whole day. Simply Paring & Controls - Hassle-free paring with iOS/Android phones, Mac or Windows laptop/desktop PC via Bluetooth connection. Both sides of the earbuds are able to control volume, tracks, calls or Siri/voice assistance without picking up your phone.