Bluetooth (Apt-X + AAC) for exceptional wireless sound quality. On-ear control buttons to power through your music with ease Tough, durable and waterproof, iSport Freedom is easily cleaned. Sweatproof, Freedom stands up to your most rigorous workouts. Superior Design Optimized For Comfort And Reliability

♬ BONE CONDUCTION TECHNOLOGY: Bone conduction headphone works by creating mini vibrations, sending sound through the cheekbones directly to the inner ears; The aim to help people with Recession Type Hearing Impairment to listen music also helps to avoid hearing loss from ordinary earphones. ♬ HD STEREO SOUND: This new smart bone conduction headphset delivers dynamic sound and truly powerful bass, it can achieve clear sound reduction in a noisy environment, so as to release the ears, you can enjoy heavy bass and crystal clear treble whilst listening to your favorite music. ♬ COMFORTABLE WEARING EXPERIENCE: Open-ear designed are made to ensure that the user does not plug or cover their ears, to avoiding wearing discomfort that in-ear or over-ear headsets will bring; A tension band is attached to adjust headphones to fit for different head circumference; Wireless desiged for No Trouble with wire tangles.