Advanced Bluetooth 5.3 Technology & One-Step Pairing: Wireless earbuds are equipped with the new Bluetooth 5.3, which fully optimizes bluetooth transmission and connection defects, and successfully achieved non-disruptive latency,and stable connectivity without signal loss or music dropouts. One-step pairing technology, the bluetooth earbuds can easily enter the pairing mode immediately after leaving the charging compartment, and automatically connect with the previously connected phone. Ergonomic Comfort Sports Design: Wireless headphones are designed with use soft silica gel over-ear earhooks, which can fully fit your ears contours and maximally guarantee a comfortable wearing experience without falling out. Equipped with 3 pairs of different sizes of spare ear caps for options, even if you exercise vigorously, you don’t have to worry about the bluetooth headphones slipping off. The earphones wireless bluetooth make an ideal companion while jogging, gym, yoga and more sports. High-fidelity Audio and Crystal Clear Call: The built-in premium powerful speakers will provide a wonderful listening experience. Wireless earbuds bluetooth with 14.2 mm large size speaker driver delivers powerful bass, allowing you to fully enjoy crystal clear calls. Bluetooth earphones has powerful built-in CVC 8.0 microphones to effectively remove ambient noise and make calls clearer, Reproducing your music vividly. 48 Hours Playtime and Dual LED Power Display: The ear buds wireless earbuds can last for 8 hours music time on a single 1 hour charge. The charging case can charge the sports earbuds for 6 times, with the portable charging case you will get 48hrs playing music. Features with smart LED digital display, you can easily know the battery consumption on both charging case presents its from 1%-100%, and the charging status of earbuds by up and down of LED bar. IP7 Waterproof and Touch Control: These running headphones are rating at IP7 waterproof, the surface of both sports headphones are sealed to prevent sweat or rain from entering, and the internal nano-coating to airborne moisture from damaging the components. With high sensitivity touch technology, it also can help you easily achieve multiple functions, including play/pause, answer/reject phone, volume adjustment, switch music, activate voice assistant etc.