[Open-ear headphones ergonomic earplugs] Open-ear headphones adopt an open, ventilated and breathable design, which is generally more suitable for long-term wear. Let the earplugs rest gently and safely on the ears to ensure a secure fit, and stay comfortable even during intense exercise.[Lightweight and stable fit] Our sports earplugs are lighter in weight and made of high-quality soft silicone material, keeping running relaxed, and the open ear design helps you achieve painless and harmless, because the open ear headphones with microphone do not need to be inserted into the ear canal. With ergonomic surround sound and streamlined sinking design, the outer ear earplugs are stable to wear, allowing you to wear them freely.[Waterproof and sweatproof] The open earphones wireless Bluetooth adopts professional-grade waterproof and sweatproof and fully enclosed sound cavity to prevent daily sweat and rain from penetrating. Ergonomic design, comfortable and stable to wear, whether it is running, jumping or other outdoor sports, the Bluetooth earplugs earplugs that are not in the ear can still be worn stably.[20 hours of battery life] 20 hours of battery life allows you to enjoy continuous use. The charging compartment has a high capacity of 240mAh, which allows you to keep the power full all day.[ALL-DAY COMFORT & SECURE FIT] Our earphones are tailored to the contours of your ears, providing a gravity-balanced, secure fit. Skin-friendly materials ensure a painless, comfortable fit without the need for constant adjustments. Whether you're hitting the gym, going for a run, or just enjoying your favorite music on the go, these earbuds stay securely in place.