Long Battery Life - Qcharge is a powerhouse,Offers playback time of up to 20 for every charge. Takes 25-30 mins to get fully charged . 10m Transmission Distance Off-Axis magnetic technology - Oval-shaped earbud with nozzle angled at 60 degree tunnels the sound directly into the ear canal, also providing noise isolation Noise Isolating Aerospace Grade AL Drivers - Qcharge comes with Built-in micro-woofers that produce a deep bass, isolating noise in any environment.