the best there is there there ever will be what a fantastic bluetooth headset u can never use a bluetooth continuously for 24hrs but even if u use it for 5hrs it will give more than 3 days backupexcellent and fantastic battery up it only takes 2hrs for full charge but it has more than 3 days battery life after full charge do go for itbattery backup 5 design 5 bass 5 sound quality 5