 5,000 hours out of the bulb before you have to replace the bulb. So the other benefit that I really like about this technology is, you know, if you get up and go get a drink from the kitchen or something like that, when you walk in front of it or you stand up, typical overhead projectors, you'll see, you know, the shadow of that person, the silhouette of that person walking by the screen. Whereas with an ultra short throw, you're not walking in front of the projector. So it's undisturbing the image that you're seeing on the screen.