This lamp comes from a French designer. What is special about it is that it can be sucked on the glass window by the suction cup at the bottom and charges itself through the photovoltaic cell on the base in a sunny day. After nightfall, it can use the stored energy to illuminate. Forestry Laser Rangefinder,High Accuracy Rangefinder,Forestry Rangefinder,Oled Rangefinder Rxiry (Jiangsu) Optoelectronic Co., Ltd , https://www.rxiryrangefinder.com 