The original infinity x1 5000 lumen and the new 7000 lumen Infiniti X1 flashlights that you find at Costco. In case you are wondering what the difference is, the 7000 is just a little bit shorter. Has a different button set up and has a slightly wider beam. I tested this last night against the 5000. It is definitely a lot brighter but you cannot adjust the beam width to the same as the 5000. basically turns night in to day. Same weight, mostly same body. | Pocketables