Prettycare robot vacuum cleaner comes with a 12-month warranty, if you have any questions during use, please feel free to contact us. Do not handle or plug appliance with wet hands. Keep hair, loose clothing, fingers, and all parts of body away from any openings and moving parts. Do not allow the robot to pick up large objects like stones, large pieces of paper or any item that may clog the robot. Turn OFF the power switch before cleaning or maintaining the robot. Turn off all controls. The robot contains batteries that are only replaceable by skilled persons. To replace the robot's battery, please contact Customer Service.