Take your daily workout to the next level with the Plantronics BackBeat FIT 2100. These sports earbuds allow you to wirelessly stream music from your smartphone or tablet via Bluetooth. The waterproof design repels all of your sweat after a heavy workout. The earbuds are also rainproof. The neckband that's around the earbuds is lightweight and remains firmly in place. Stay alert when you're working out outdoors thanks to Always Aware. This'll help you hear any ambient noise, so you can hear whether a car or bike is approaching.