5. Multipoint Connection: with bluetooth v5.4 technology enhancement, the wireless over-ear earbuds deliver 2x faster transmission speeds and rock-solid connectivity, supply a stable connectivity to ios and android smartphones, and support multipoint connection, allowing you to seamless switch between 2 phones.` 3. Intelligent Charging Case: the open-ear headphones have a interesting charging case with touch control LED screen. It supplies you a customizable experience: personalize the earbuds sound equalizer setting, interface, photograph, time, language; find the headphones and so on. 6. Functions Button Control : featuring an touch button design, these wireless Bluetooth earbuds allow quick call answering/ending with just a fingertip press. The innovative multi-function single-button control enables effortless management of music and calls. Whether commuting, exercising, or running outdoors, enjoy a seamlessly convenient and secure operating experience with these premium wireless earbud. 7. Durability and Water Resistance: IPX5 waterproof and sweatproof effectively repel sweat, rain, and splashes from workout or outdoor activities, making these over-ear earbuds the perfect choice for high-intensity training and outdoor adventures. 4. 8- : bluetooth 5.4 open-ear earbuds provide up to 10hours of battery life per charge, with an additional 70 hoursfrom the charging case, total 80 hours ; Thats 12 or 32 on one charge, perfect for long trips without frequent recharging.