Product Material: ABS Color: black, blue, red Quantity: 1 piece Package content: 1*Bluetooth headset 1.[Bone Conduction Technology]: The new type of wireless earphones using bone conduction technology is different from other wireless earbuds. It converts sound into mechanical vibrations of different frequencies and uses cheekbone to spread sound waves. It can eliminate multi-level sound wave transmission and achieve clear sound restoration in a noisy environment, while also being able to hear outside sounds, making your life safer. 2.[Healthy \u0026 Safe]: The sound transmission does not go through the tympanic membrane, reducing tympanic membrane damage, the opening of the ear canal is less likely to breed bacteria and is more hygienic. The open ear headphone allows for you to hear what is going on around you so is safer for biking, running, and driving than traditional sound-canceling devices. 3.[lightweight \u0026 COMFORTABLE]:Use our lightest and most comfortable sports headphones to experience unparalleled comfort. The earplug-free and painless design is suitable for all-day listening 4.[Advanced Bluetooth 5.2\u0026 Long Playing Time]: Adopted the most advanced Bluetooth 5.2 technology , reduces consumption, and protects your battery more effectively. Built-in 150mAh battery, using the USB-C charging cable (included) to charge about 2 hours, volume playback time can reach 7-8 hours. 5.[Widly Use]: These headsets repel sweat dust and moisture. It is a great idea for listening to podcasts or outdoor activities like running, hiking, cycling, especially when you want to keep situational awareness. And the glasses, sunglasses, the hat will not be disturbed, just enjoy your happy and safe listening journey.