The solar warning light alarms drivers of dangerous area in terms of accident at the places where the vision is not clear enough such as plane curved area. This product has a function to attract the drivers’ sight focus and warn of the dangerous areas for the drivers. Especially, this product has fast flashing which maximizes the bright night-time vision so the drivers can obtain the vision of the front and sides    -  Waterproof and does not easily get broken -  Automatic charging by sunlight, auto-flashing when dark -  Automatic switch control -  No waste of the energy, eco-friendly and semi-permanent -  Easy installation (Install without electric wiring and portable) -  Easy battery replacement -  Effective to attract the sights as it has self-flashing -  Perfectly works during rainy season, winter season and     foggy weather -  One side and 4sides are both available to manufacture following the request     SK-F206A(4sides) [Design registered product] Size 750*120*210(mm) Battery 12V / 12AH Solar panel Mono-Crystalline Silicon (10W) LED 5mm High-brightness (20pcs*14) (Color: Red&Blue) Visual distance Over 2000m forward Working type Night-time, daytime&night-time Working environment '-40℃ ~ 75℃ Working time 10days during the rainy season (Supposing to use the product with 24hours working mode) *  Battery life is 3~5 years *  Cleaning the products after every 2~3 months boosts the product’s quality progress *  Could be different from the pictures for the quality progress and following different working modes, the battery life could shorten.