Precautions1. The earphones should be stored in a dry and ventilated environment, to avoid oil, water, moisture and dust affecting product performance.2.Avoid using stimulus,organic solvents or items containing these ingredients to clean the earphone3.The use of earphones should be correctly as per the specification, pay attention to use the influence of environment on the earphones.In order to ensure the smooth connection,it's recommended that the distance between the earphones and phones within 10 meters 4If the earphones faild to connect or with poor connection,pls do not take apart the earphones or the accessories on your own, Otherwise, no warranty.5.Regarding charging earphons.Pls use the standard usb cable or pointed charging cable from our company to charge the earphones.6.in order to ensure normal use,please ensure sufficient power of the earphones.