Binaural HD Call: Built-in mic on both earbuds with intelligent ENC noise reduction delivers clearer talking sound in stereo mode. Hi-Fi Stereo Sound Quality: Supports SBC+AAC professional audio codec technology,titanium dome composite membrane moving coil speaker,enhance the bass,catch every details of sound. Bluetooth 5.0: Bluetooth 5.0 chip technology, which can offer a clearer, faster, and smoother connection,transmit lag-free and lossless soundtracks with zero distortion. Design for Sports:Touch control design,ergonomic design suitable for various ear shapes,comes with earwings(XS/S/M/L) to ensured the best possible fit. Charge on the Go:Independent real-time battery display,see how much battery is left at a glance, the headset supports fast charging, charging for 10 minutes, can be used for 1.5 hours.