... more than 150 meters. 3.40 pcs LED lamp beads for lighting,all are 0.06W,1600-1800MCD.4.Shell ... about 15 hours,working time is about 15 hours for 28pcs with brightness lightingInstructions:1.While charging,contact the ... switch,you can use the 40 LED lamp lights for lighting,push the switch back,you can turn off ... hurt them.4.If the product is left unused for two months,it need to be charged at least ...