Ultra thin Robot vacuum cleaner window cleaning robot window cleaner electric glass limpiacristales remote control for home. I’m glad you like this product. Please note that this product needs to be plugged in, not for charging. This one cannot be used for charging. The battery inside the robot is used. To support the safety device to prevent falling. The whole machine has passed CE, FCC, ROHS quality. The power supply passes the CCC, CE, FCC, UL, ROHS. Safety testing and certification. 1 power cord + adapter. 2 pairs of cleaning rings (4). 1 extension of 4 meters. 1 manual (or English manual). Wait 20 seconds after starting up until the blue light stop flashing, Then start working. Because the robot need 20sec to detect the glass plane. Binding the safety rope when using, Prevent falling from high altitude. Spray some water on the edge of the Mop when working, will be better effect. Have any questions, we will solve it for you. (When you don’t know how to use it, I will give you answer and send vou an operation video). If there is any damage, we will send you the parts for free, please you install it (we will send you the installation video).