Comfortable headphones: super-slim neckband and comfort-fit earbuds are so light, you can wear them all day Control music and calls: simple one-touch controls let you move effortlessly between music and calls and magnetic earbuds stick together to minimize tangles when not in use Alerts: comfort-fit earbuds block out ambient noise so you can immerse yourself in music and neckband with subtle vibration alerts you to incoming calls Noise-reduction headphones: noise- and echo-reduction technology helps your voice come through clearly during calls Talk time: up to 8 hours of non-stop Talk or listening from a single charge - and up to 10 days in standby mode