Shokz Open Run Bone Conduction HeadphonesThese lightweight, open ear, bone conduction headphones are great for running and training, and are fully waterproof so that they can cope with whatever the elements throw at you. Bone conduction technology delivers music audio through your cheekbones, ensuring ears remain completely open to hear ambient sounds Lightweight less than 1 ounce (26g) 8 hour battery life for music, calls, audiobooks and podcasts, or 10 days of standby time Complete