1、[Open Ear Design] With a new generation of open ear design, the headphone can fit gently and firmly in your ear without entering the ear canal, reducing pressure and hearing loss after long term wear. No extrusion of the ear, no blockage of the ear canal. 2、[Stereo] Bluetooth headphone with 16.2mm vibrating diaphragm speaker drivers provide pure and balanced sound and clear output for all music genres with soft sound quality, allowing you to immerse yourself in a wonderful world of music. 3、[Safe To Use] With open ear headphone, you can hear your music and your surroundings at the same time. Stay aware of your surroundings and stay alert to changes in your environment, whether you're biking, walking, running, exercising or driving. 4、[Long Battery Life And IPX4 Waterproof] The wireless sports headset has a built in 130mAh lithium battery that can play for 10 hours on a single charge. With IPX4 waterproof protection against common splashes, sweat, and rain. 5、[Ergonomic Design] Open ear Bluetooth headset has no earbuds or ear hooks to cause discomfort. Flexible, secure and ergonomic design ensures that you stay comfortable and safe during hiking, running and other outdoor activities.