Whether you're working out or commuting, the OTE-10 is perfectly engineered to give you a powerful sound and the confidence to wear it. Flexible ear hooks to provide your training sessions with greater comfort and safety. Balanced sound between deep bass and clear treble. Built-in microphone with hands-free and call control functions. Ergonomic and ultra lightweight, perfect for high performance sport training. What's in the box 1X Wireless Sports Headset, 1X USB Charging Cable, 1X User Manual