Jai controlled these 3D glasses for an Epson 6100W possessor of the original glasses are far too expensive! For 3 times cheaper Jet Jai therefore trust the Internet and order this one! Received a few days later, the glasses come with the branches to be clipped (very simple) and battery in 2025 to install. The size of the glasses is correct that absolutely no discomfort, turn the glasses up and sync this by automatically 2 seconds (light projector course), and to my surprise the goggles are rendered immaculate, if not better than origin. In conclusion great product, very light! Their only downside is that there is no battery (150 hours battery life with the battery, according to the manufacturer) and the branches are not closed but at this price, what more! I ve recommended a pair for the whole family can enjoy! Do not hesitate to order