A Bit Over Rated
The Specs say 1000 lumens max. I compared this against a relatively new LED flashlight from a different producer. That other flashlight was rated 300 lumens and it seemed to produce more light output than this flashlight when operating with a freshly charged battery and at the high power setting. I'm not saying that this is a Bad flashlight - I got it on a lightning deal for a pretty good price, but I really don't think the 1,000 lumen rating is realistic. I put it closer to 200 or so based on a comparison with a light rated at 300, and a few LED Mag Lite Replacements that are rated at a bit over 200. To measure light output accurately requires expensive equipment that few people have access to - so this is just doing things by eye - but I don't think my eyesight is that bad..... I do like the idea of the lithium ion rechargeable battery - but I don't think I would purchase another one of these....
amazon reviews