JBL Under Armour Wireless Headphones, One Size, Black With a Proven ergonomic ear tip designed specifically for athletes, twist and lock them into place - they're guaranteed never to hurt or fall out Internal and external strain reliefs along with Ipx5 sweat proof construction provide the ultimate durability Premium 5.8mm dynamic Drivers deliver big sound in a compact size. Jbl's legendary pure bass performance will keep you Driven to finish Strong Bluetooth connectivity to iOS and Android devices allows for a wire free, distraction free workout Control tracks, Volume and calls easily with a inline 3-button Mic