Unfortunately, the screen is defective; it doesn't stop at the upper limit and doesn't close completely. The seller gave me a trick to adjust it, but it didn't work. When I sent him a video to show him that it didn't work, he decided not to reply, despite my reminders. I asked him to send it back for a refund, but he didn't reply either. Also, the screen reflects light very badly. Despite a high-performance projector, you can hardly see anything, even when there's no other light source. I bitterly regret my choice; the product is defective and of poor quality and the seller takes no responsibility and prefers to disappear.

excellent well made product