Yingu,an expert in color lights come from China's city of lightLED battery light, CE approval, ROHS test report, can made from 1LED to 99 LEDS, the IC in battery-box,when press:1)once for quick flash,2)again for steady flash, 3)again for lights on(No flash),4)again to turn off;this LED battery lights can replace,when has one LED is not light, the others will continue working. you can insert many differents lampshades on it, for example:icicle, strawberry,start,snow,ball,heart-shaped and so on. or you can design it by yourself.