About this item [outstanding sound quality] Equipped with cutting-edge audio analysis chip and upgraded 13mm graphene dynamic drivers, tuned by 30 years experienced audio experts, this headphone creates the 360° stereo surround sound quality for you，enhances powerful dynamic bass, sweet soft mid-tone and clear treble, reproduces raw music and restores the natural voice. [CVC8.0 noise reduction] Bluetooth V5.3 chip equipped with DSP anti-interference chip, binaural synchronous transmission, achieves lower latency, faster transmission and more stable connection (up to 33ft); CVC 8.0 automatic noise reduction with the cooperation of noise reducing microphone, can automatically filter ambient noises and optimize clearer voices, to ensure a full immersive listening experience. [Featherweight comfort] Featherweight comfort and skin friendly design equipped with soft, adjustable, secure-fit ear hooks, and three different sizes of ear tips for choice, it is very comfortable to wear without feeling tired and pain when wearing it for a long time；Soft-fit ear hooks with ergonomics design, totally ensures the sports earbuds stay comfortably firm in place and won't fall off during your workouts. [Designed for sports] Reinforced IP7 waterproof design for sweat & water resistance, you can take your workouts to the high level, and can be used for camping, sports, fitness, etc, even on rainy days.The whole machine weighs only 46g including storage charge box , easies to carry and store in your pocket. [Intelligent connection+120h play]After the first connection, the headphone will automatically connect to matched equipment when taken out. With new in-ear detection technology, it will pause when taken off and automatically play when put on; Single earbud can be used for 10Hrs, cooperation with 9 additional charges from 950mAh charging case, it can be used up to120Hrs. Digital display shows you the remaining battery at any time.