JVC XX Wireless Bluetooth In Ear headphones offer a tough rubber body design for durability. The deep bass ports and 8.5mm neodymium driver unit provide superior sound quality. They offer a pivot motion ear hook for stability during the toughest fitness activities. Sweat proof (IPX2) rating with a 5 hour built in rechargeable battery. S/M/L silicone earpieces and carrying case included.