Features: 1.Bone Conduction: Open ear headphones convert sound into mechanical vibrations of varying frequencies and deliver quality sound through the cheekbones, ensuring that both ears remain completely open to ambient sound for true pain 0 and protected hearing. 2.Ergonomic Design: Bluetooth bone conduction sport headphones feature an open ergonomic design that is comfortable, stress 0 and clean. You don't have to worry about putting pressure on your ears when wearing them for long periods of time. 3.IP56 Waterproof: Bluetooth bone conduction headphones are equipped with IP56 rated waterproof and dustproof, protecting the Bluetooth headphones from sweat and raindrops. The headset is not suitable for swimming, please do not drop it directly into the water. 4.Bluetooth 5.0: Bone conduction earphone with BK3266 and HAA9209 chip solution, Bluetooth 5.0 version, the connection is more stable and fast, can be connected to cell phones, laptops, computers. 5.Long Battery Life: Wireless sports earphones can support at least 6 hours of continuous music, calls and playback, with a charging time of about 2 hours. Dual sound technology brings shocking bass, release both ears and enjoy balanced HIFI sound quality. Item Type: Bone Conduction Headphones Material: ABS Color: Black Chip Solution: BK3266 and HAA9209 Battery Type: Built In 250mAh Li Ion Battery (Included) Bluetooth Version: 5.0 Connection Distance: Approx. 15m / 16.4yd Playback Time: About 6 Hours Talk Time: About 6 Hours Charging Time: About 2 Hours 1 x Bone Conduction Headphone 1 x Charging Cable 1 x Instruction Manual