The WINBOT WA3 is a wireless smart window-cleaning robot. Powered by a large-capacity battery, it can keep on working for up to 50 minutes, cleaning an area of about 20 square meters.Designed by: Li Xiaowen, He Fang, Yu Xintong and Liao Wenli of ECOVACS Robotics Co. Ltd.Contact: mavis.jiang@ecovacs.com; www.ecovacs.com