My favorite open earbuds

There are headphones, and then there are headphones that leave your ears open to hearing the world around you. If you want to listen to music or podcast and also want to stay safe on a bike, open ear headphones are the way to go. Dieter Bohn looks at five options, from the Aftershokz Aeropex to the Bose Sport Open Ear headphones to a Bluetooth bike helmet.