Clip on ear bud design stays put during fitness activities. Adjust the slider included on the cable as needed for a secure fit during use. Wear ear buds securely around your neck when not in use by using the magnetic feature in the ear buds. Integrated buttons allow you to answer calls through the headset, adjust volume and skip music tracks. Interchangeable ear bud covers. Built-in lithium battery. Charging time: 2 hours. Playback time: Approximately 4 hours. Bluetooth operating distance of up to 30 feet. Brookstone drawstring storage pouch and Brookstone box included