OVERVIEW: Whether you use them before, during, or after your workout, the Powerbeats Wireless In-Ear Headphones from Beats by Dr. Dre are designed to deliver powerful and balanced audio all day long. The built-in battery is enough to power the headphones for up to 15 hours. During workouts, the sweat- and water-resistant reinforced construction keeps them protected, while the neckband and adjustable ear hooks keep them secure. They're Bluetooth-compatible and feature dual built-in microphones...