solar road stud Features: 2) Material: aluminum alloy and polycarbonate 3) Solar panel: monocrystalline 3.5V/140mA 4) Power source: Ni-MH 1,800mAh/2.4V or supercapacitor 2.3V/170F 5) Light mode: flash, gradual flash, constant, recycle, colorful, gradual+leap type Turn on/off: Automatically turn on at 50+/-20lx, turn off at 350+/-50lx by photo sensor 6) LED: 2 x 3 super bright LEDs Φ10mm 7) Brightness: 20000mcd 8) Colors: blue, red, green, yellow, white 9) Visible distance: over 1,000m 10) Heat resistance: -25 to +75 centi-grade degree 12) IP>67 13) Load:160KN(movable load) 14) Product size: dia160x High46mm 1.2 KGs