iFrogz FreeRein Reflect Wireless Bluetooth Earbuds - Blue Smart: The built-in controls are covered in silicone for simple music and call management that's also moisture resistant. Comfortable: Ergonomic, angled tips and flexible silicone sport wings ensure a comfortable secure fit even during the most aggressive activities. Easy: The flat cable helps prevent tangles and knots, even when the buds are tossed in a gym bag. Lasting: A powerful battery keeps the buds going for up to 4.5 hours - plenty of time for even the longest workouts. Safe: The cable includes reflective accents that help you be seen so you're safe during your low-light activities.