Feature 1Bone 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 free and protected hearing. 2Ergonomic Design: Bluetooth bone conduction sport headphones feature an open ergonomic design that is comfortable, stress free and clean. You don't have to worry about putting pressure on your ears when wearing them for long periods of time. 3IP56 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. 4Bluetooth 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. 5Long 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 HeadphonesMaterial: ABSColor: BlackChip Solution: BK3266 and HAA9209Battery Type: Built In 250mAh Li Ion Battery (Included)Bluetooth Version: 5.0Connection Distance: Approx. 15m or 16.4ydPlayback Time: About 6 HoursTalk Time: About 6 HoursCharging Time: About 2 Hours .wang-edit-text{ font-family:'Arial' !important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 x Bone Conduction Headphone1 x Charging Cable1 x Instruction Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.