1.HIGH QUALITY SOUND - The Bluetooth earpiece adopts the bluetooth 5.3 chip technology, which provides more clear sound and stable connection, allowing you to hear crystal clear calls like you are communicating face to face with others. Don't worry about interruptions on listing to music and calling. 2.POWERFUL STEREO SOUND - Despite its open-ear design, this headphone deliver powerful stereo sound that rivals traditional headphones. We feature advanced audio technology that produces clear, crisp sound with deep bass and rich treble. Whether you're listening to music, watching a movie, or taking a phone call, this headphone provides an immersive audio experience. 3.ULTRA LONG PLAYTIME - The headphone comes with a type-c charging cable,it provides up to 36 hours of stand by time. A single charge of 15 minutes, you can enjoy 5 hours of music. When the battery of the earphone is exhausted, the earphone will voice prompt.