Solar Road Marker/Pavement Marker with Solid Aluminum-alloy Shell Powered by Solar Cells and Panels They are waterproof, energy-saving and environmentally friendly and maintenance free and mainly used for traffic signal project such as highways, parking lots, roads and similar isolated or stand-alone traffic applications. Specifications: Wearable Aluminum-alloy shell with transparent and reflective PC window 1. Solar panel with wearable PC cover (2.4V/0.15 to 0.3W) 2. One Ni-Mh heat-resistant and rechargeable battery bank (1.2V/1,800Ma), replaceable 3. PCB with over-charging function 4. 4pcs Super bright LEDs 5. Light intensity and view distance: 8,000 to 10,000mcd and over 300m 6. Frequency or flash rate: 2Hz or according to customers requirements 7. Working model: Steady lighting or Flashing. depends on your requirements 8. Bearable weight:20 Tons 9. Color: yellow, red, blue ,green, and white 10. Working time: 70-120 hours successively after the battery is fully charged 11. Charging time: five to six hours/day 12. Working temp: --20 degree ----+80 degree 13. Life time: three to five years 14. Warranty: one year 15. Easy installation, no maintenance 16. Brightness sensitive auto-switch, automatically turns on at night and turns off at dawn 17. High visibility LED's help ensure easy and safe night driving 18. Ideal for highways, parking lots, roads and similar isolated or stand-alone traffic applications 19. Suggest to put them on the road side or middle protection line in order to have less damages to the solar panel surface