Jabra Sport+ Headphones lock in place for a secure fit during your most athletic movements. They're also wireless, leaving you free to move without distractions. Weather and shock proof, this durable system will stand up to your toughest workouts. Recommended by 5-time Ironman World Champion Craig Alexander. Track your performance on-the-go with the Endomondo app. Experience up to 4.5 hours of talk time, 4 hours of music time and 5 days of standby time. Built with powerful bass with a built-in FM radio. Provides easy control of music and calls. Multiuse™ allows connection to 2 devices simultaneously. Comes with: Jabra Sport Wireless+ stereo headset. 6 kinds of EarGels™. 1 Protective Pouch. 1 Fit clip. 1 USB cable. 1 Quick Start Guide.