1. Prevent the machine from falling from a high place or being shocked violently;
2. The product shall not be stored or used in an environment containing corrosive gases such as chlorine.
3. This product must use 4.35V/3000mAh 18650 lithium batteries distributed by our factory, and the batteries can not be placed in high temperature environment.
4. When charging, please use the power adapter distributed by our factory. If charging with the power adapter which is not follow the standard of our factory, it may damage the instrument.