Here is a pair of in-ear headphones that let you listen to music and answer calls while you exercise. SOL Republic Relays Sport Wireless In-Ear Headphones are water and sweat resistant. They are lightweight and designed not to get in your way. These headphones connect to your smartphone via Bluetooth.
These headphones give you easy access to mic and music controls. They work indoor and outside. The battery life lasts up to 8 hours. A pair sets you back under $100.