About this item [Open-Ear Design] - Bone conduction Bluetooth headphones make you more able to hear the sounds around you, which is very suitable for cycling and running near traffic. Another big advantage of bone conduction headset Bluetooth is reflected in outdoor activities. When using bone conduction headset Bluetooth to listen to music, you can also hear the sound of the surrounding environment. So that you will not be "blind" during exercise [Innovative Bone Conduction Technology] - The open-ear fit design transmits music through your cheekbones, ensuring that your ears remain completely open to environmental sounds during long-term wearing to maximize understanding of the situation. Loluka bone conduction headphones provide you with high-fidelity sound and protect your hearing [Super Battery & IPX4 Waterproof] - 49 feet of signal transmission ensures long-term outdoor activities. Built-in high-performance 170mAh lithium battery, fully charged only 2 hours, continuous playback time up to 5H, standby time up to 15 days. IP4 waterproof standard, resistant to light rain and sweat, suitable for outdoor activities [Fast and Stable Bluetooth Connection] - The latest Bluetooth 5.0 chip brings stronger and faster connection. Supporting a variety of Bluetooth-compatible devices, including smart watch, tablet, iOS or Android devices [Perfect Ergonomic Design] - Our earphones are only 33 grams(1.16oz), completely wrap-around design, no pressure when worn, bringing your head and ears close to the headphones, reducing hearing impairment and not irritating your ears. This creates a more friendly experience for the body and does not slip during exercise › See more product details