1. Three ways to charge power of model CT-881/CT-882: recyclable lithium battery, USB cable, 3*AAA batteries.
●Before using Lithium battery version , firstly check whether the battery finger and power contact are rusted or not to prevent poor contact.
●For 3*AAA version batteries, please check whether the plug rusted or not, if the sound become weak and scene slow down, please replace the batteries. The battery is provided by the merchant or the user.
●Use USB cable under the guidance of your parents.
2.CT-881/CT-882 is made of plastic, do not close to the fire source.