4. Solar rechargeable battery: NI-MH 1.2V/800MAH 5. Working environment: -20-+70 degrees 6. Working hours: 8 hours in sufficient light, can be continuously bright for more than 72 hours 7. Solar road stud Light-emitting mode: flashing or bright 8. LED light color: yellow, red, white, green, blue 9. Visual distance: more than 800 meters 10.