*    Unit size: Ф120*50（mm） *    Unit weight: 0.7KG *    Material: Cast-aluminum *    Solar panel: 2.5V/0.45W mono-crystalline silicon *    Battery:  2 pcs 1.2V/600mAh NI-MH battery *    LED: Epistar brand, Dia 10mm, 3pcs leds single side *    LED color:White *    Working temperature:  -25 °C ~ + 75 °C *    Working mode: steady *    Working time:  40 hrs for steady *    Lighting control < 80 LUX, can be adjusted as ur request *    Visibility: 800M *    Protection level: IP68 *    Load bearing: 30tons