1、SAFE AND HYGIENIC: Bone conduction headphone converts sound into mechanical vibrations of different frequencies and deliver premium sound through the cheekbones. Ensure you can hear ambient sounds, guard your hearing, clean and hygienic. 2、ERGONOMIC DESIGN: Bone conduction headset is designed with open ergonomics for comfort and pressure free. Ensuring painless wearing and lightweight, you don't have to worry about squeezing your ears for long time wearing. 3、IP56 WATERPROOF: Equipped with IP56 rated waterproof and dustproof, the headphone is protected from sweat, splashes and rain drops. However, it is not suitable for swimming, please do not drop them directly into water. 4、COMPATIBLE DEVICES: This open ear headset has excellent performance, with Bluetooth version 3, Bluetooth connection is more stable and fast, can connect to cell phones, laptops, computers, tablets and more. 5、LONG BATTERY LIFE AND HIFI SOUND: Bluetooth bone conduction headphone supports at least 7 hours of continuous music, calls, charging time is about 2 hours. Dual sound technology delivers shocking bass and balanced HiFi sound quality. 1 x Bone Conduction Headphone1 x Charging Cable Item Type: Bone Conduction HeadphoneMaterial: ABSColor: BlackBattery Type: Built in 150mAh Li Ion Battery (Included)BT Version: V 5.3Connection Distance: ≥10m / 32.8ftPlayback Time: About 7 HoursCharging Time: About 2 Hours