Instruct: Classify the given review into positive or negative sentiment.
Query: low light output

Some of the other reviewers say this bulb puts out about as much light as a 20 watt incandescent equivalent. I don't think it even reaches that. I bought this bulb some time ago and used it in a small office lamp. while it might be adequate for night time reading, I think that's about as good as it gets. It certainly isn't enough to replace a standard household light (eg: 60 watt bulbs). I stopped using it as it simply wasn't bright enough, but for the short time I used it, it worked. Though now I'm a little concerned about it's build considering the complaints about the bulb failing after so short a time. I will have to plug it back in and see if I can replicate the other user's claims.