I bought it for testing to choose between a few AR111 lights. It claims to be 1650 lumens, but it was the worst in the test. It has less light than the Specialight which claims 15w, 1300 lumens, and less than the Adeleq 15w, 1500 lumens. Less than the Eurolamp 15w, 1500 lumens. Money wasted on something that claims 1650 lumens, which is actually below 1000 (the manufacturer provides false information)

I RECEIVED IT TODAY and disappointingly I have tried almost all the AR111 because I want to buy several 50+ for a store besides the lumens they state, I also look at the quality of lighting. This specific lamp emits fewer lumens than other AR111 9 watt. Specifically, with a measurement from 0 to 5000 it gives 1200, when another 15w gives me 2500 and another 15w gives me 2800. A very well-known brand, Gayger 12w gave me 1500, so this one is not worth more than 1 that I put in the color writes 2700 but it is closer to 3000, lumens writes 1650 I think it is about 800 lumens. The manufacturer gives it an energy efficiency rating D!!! when others that shine much more at the same wattage have worse ratings E and F. It emits half the lighting of other 15w 1500 lumens that I have tried. It contains led cob and not smd led like all the others I have