[True Lightweight Wearing & Stable Fit] The overall weight of the open ear headphones wireless bluetooth can stay on the ears softly and comfortably. Compared with in-ear headphones and bone conduction headphones, the open ear earbuds wireless bluetooth have ergonomic design to achieve a truly painless & comfortable wearing experience, when sport, work, talking and so on. [360° Surround Sound & Sound Leakage Detection] Open ear wireless earbuds use extra large dual flexible composite large diaphragms. ACS ambient sound & original surround sound create pleasant sound effects in any situation. Detect sound loss, adjust the built-in coil at the same frequency, change the sound propagation direction to a good angle, and reduce 98.5% of sound leakage, allowing you to have worry-free calls. [1.5-Hrs Fast Charge & 60-Hrs Long Battery Life] The open ear earbuds wireless bluetooth support 1.5-Hrs fast charging. Regardless of music or calls, it can be used for 8-Hrs at one time, and with the wireless charging case, the bluetooth earpiece can be standby for a total of 60 hours. There is no worry about battery life even when going out. [Smart Noise Cancelling & HD Microphone] The open ear bluetooth headphones calculates accurate directions through a dual microphone matrix, protecting the main channel while removing various interfering noises in the environment. The open ear headphones uses an integrated cabin design, and the touch operation is simple and easy to use. All operations can be completed with one hand. [120° Free Rotation] This open ear headphones supports 120 degrees of free rotation, with options for 45°, 90°, and 120° settings. Adjust the tightness according to your ear shape for a more comfortable fit. It is less likely to fall off during exercise. [True Lightweight Wearing & Stable Fit] The overall weight of the open ear headphones wireless bluetooth can stay on the ears softly and comfortably. Compared with in-ear headphones and bone conduction headphones, the open ear earbuds wireless bluetooth have ergonomic design to achieve a truly painless & comfortable wearing experience, when sport, work, talking and so on. [360° Surround Sound & Sound Leakage Detection] Open ear wireless earbuds use extra large dual flexible composite large diaphragms. ACS ambient sound & original surround sound create pleasant sound effects in any situation. Detect sound loss, adjust the built-in coil at the same frequency, change the sound propagation direction to a good angle, and reduce 98.5% of sound leakage, allowing you to have worry-free calls. [1.5-Hrs Fast Charge & 60-Hrs Long Battery Life] The open ear earbuds wireless bluetooth support 1.5-Hrs fast charging. Regardless of music or calls, it can be used for 8-Hrs at one time, and with the wireless charging case, the bluetooth earpiece can be standby for a total of 60 hours. There is no worry about battery life even when going out. [Smart Noise Cancelling & HD Microphone] The open ear bluetooth headphones calculates accurate directions through a dual microphone matrix, protecting the main channel while removing various interfering noises in the environment. The open ear headphones uses an integrated cabin design, and the touch operation is simple and easy to use. All operations can be completed with one hand. [120° Free Rotation] This open ear headphones supports 120 degrees of free rotation, with options for 45°, 90°, and 120° settings. Adjust the tightness according to your ear shape for a more comfortable fit. It is less likely to fall off during exercise.