Vibration open-ear design IP67 Waterproof rating Bluetooth multipoint technology connects up to 2 of your devices simultaneously 5 minute charge = 1.5 hours of playtime Outstanding sound quality through bone conduction technology 2 built-in microphones What's in the Box? 1 Pair Wireless Bone Conduction Headphones, 1 Magnetic connector to USB charging Cable 15.74 in (400mm), 1 Storage pouch, 1 Quick Start Guide