Feature: 1. Open design: Bone conduction technology utilizes vibration to transmit sound through the cheekbones to the interior, producing high fidelity and high-definition sound even in noisy environments, providing a high-quality audio experience. 2. Upgraded bone conduction headphones: SENSONRAY open headphones use the latest wireless open technology. No need to put earplugs into the ear to alleviate pain or hearing damage. With improved technology and a fully enclosed cavity, bone conduction headphones can reduce sound leakage by up to 50%, providing an unparalleled audio experience 3. Equipped with a 180mAh large battery, it can be fully charged within 2 hours for 15 hours of ultra long playback time and fast charging. Enjoy up to 15 hours (60% volume) of music or calls without interruption. The wireless earphones support Type-C fast charging, which is safe and stable. They also have a 10 minute fast charging function and can provide a battery life of 1.5 hours 4. Safe and Comfortable: The bone conduction earphones weigh only 29 grams and are made of soft silicone material and memory titanium alloy skeleton, supporting 360 ° twist instant recovery, making them comfortable to wear without any burden. IP55 waterproof rating, fearless of intense sports and extreme weather, suitable for running, cycling, hiking, driving, mountaineering, skateboarding, skipping rope, etc* Attention: Not suitable for swimming. Specification: Package List: 1 * Earphones 1 * Charging cable