The JBL's ENDURANCE SPRINT headphones are always up for a run, and with speed charge, user can enjoy up to an hour of audio monitoring time after just 10 minutes of charging the 8-hour (max) battery. These tight fit buds were built from the bottom up to maximise your workout, using FlexSoftTM ear tips and TwistLockTM technology. They're guaranteed to never hurt or fall out, and touch controls make it simple to adjust music, while the MagHookTM keeps them close at hand when you're not using them.