Wind up light1. 3pcs ultra-white LED(10000-13000MCD); 2. Wheeling the handle 1minute(about 120 turns),will allow over 30 minutes of continuous lighting;3.Ideal illumination tool,for family,travel, camping, emergency; 4.Placed for a year,it generates electricity by winding-up,and still works nomrally; 5.Energy saving and no pollution; 6.Environmentally friendly;