Luwint Handheld Red Emergency Strobe Warning Light - LED Solar Powered Road Construction Cone Traffic Flicker Beacon Lamp Automatic charging in the daytime, automatic flash at night; During the day, warning lights only charge and do not flash. If you need it flashing during the day, cover the solar panel LED light control: super bright LED flash 48000MCD; Light visual distance of 500m New handheld warning light; Long non-slip grip, easy to hold or install; Wireless & weathproof Flashing frequency of 60 cycles/ min; 360  self-luminous light body Multifunctional warning lights: construction traffic construction, crane tower, vehicle, house, camp, drive the beast ect.