1W 3W of LED flashlight is the standard set by Lumen Company of the United States when it produced high-power LED several years ago. At that time, 1W LED had 25 lumens, and 3W LED had 40 lumens (lumen is a term of brightness standard). However, with the high development of LED, 1W has now grown to 45 lumens, which is brighter than the 3W of that year, and now it can't be found abroad. View project & amprd =1&; 874 134254 1 & amp； MESE:IT & amp； referrer =/ws/ebay isapi . dll % 3 fmyebay
Is to indicate the number of lumens and power, so that you know that brightness and power consumption, the best of both worlds.