Sunorm Bluetooth 4.0 Sport Headset Wireless Headphones with Microphone for Sport Running Noise Cancelling Earbud Earphone for Cell Phone (Black) Behind-ear ergonomics design guarantee 100% stable wearing while Exercise, Running, Climbing, Riding, Skating, Camping, Fishing or other sports Built-in microphone, volume control, play control for convenient music and hands-free calls ABS material chamfer for sturdiness sound quality, sweat-proof, anti-cold, durable using Rechargeable battery for 5 hours continuous playing; Bluetooth 4.0 technology, transmit clear purity sound to a range of 33 foot Package content: 6 x eartips, charging cable, easy-carrying pouch; compatible for iPhone, iPad, other Cell Phones and Bluetooth enabled devices