iKross IKBT14 High Quality Bluetooth Headphones with Water Resistant Capabilities * Great for use at the gym, outdoor activities, and even in the rain. DO NOT SUBMERGE IN WATER. * Lasts approx 7 hours on one charge - USB charging cable included * One size fits all - Sport design wraps behind the ears and sits comfortably on the back of your neck * Includes built-in microphone for handsfree phone calls