... safe and convenient environmental friendly 200 LEDs solar string light, led solar fairy lightFeatures:specifications400MAH/ 2v solar pannel; 4800MAH/1.2v NI-MH ... holiday of X'mas, party,club,bars,etc.working principlesolar energy transforms to electricityworking modes3 ways of switch(OFF/SLASHING, STATIC ... the sunlight, turn on the switch then it works. 200LED solar string light, led solar fairy light