Get clear, powerful sound from Bose truly wireless in-ear headphones. They're engineered to stay in place, and stay comfortable. Bose packed them full of technologies so you can push your workout to the next level. When it came to the tech inside these earbuds, Bose focused on every little detail - from tuning the circuits for improved sound to tweaking the antenna position for maximum Bluetooth signal strength. Headphones that play consistently and clearly whether your phone is in your hand, in your pocket, strapped to your arm or sitting on top of the treadmill and there's never a wire in sight.