[Secure Fit - Built For Runners] These running earbuds were designed with the input of hundreds of runners, creating the ultimate Bluetooth headphones for running; their comfortable ear hook create earbuds that don't fall out during a run or workout [Waterproof] Take these waterproof Bluetooth earbuds on any adventure, rain or shine; The IPX-7 rating means the Bluetooth waterproof earbuds are perfect workout headphones for use while running in the rain; [NOTE: they are NOT designed for swimming] [80 Hour Battery Life] One charge lasts for 2 months of workouts with these earphones' wireless charging case; Each over the ear bud can play music for 8 hours, and the charging case will recharge them 9 more times for a total of 80 hours of use [Immersive Audio + Bass Mode] Our wireless headphone's power beats the competition; We tune every wireless earphone in Boston to produce truly amazing sound; These wireless ear buds wireless Bluetooth earbuds also have a deep bass