The Sima 12-foot inflatable kit lets you turn your backyard into a theater. The giant screen system comes with tie-downs and an electric pump for quick inflation. The screen has a 16:9 widescreen ratio, but is compatible with 4:3 video. The screen is bright, white vinyl that can be used with any front or rear projector. It also comes with a pair of 8″, self-powered, moisture-resistant speakers. The speakers are 80W and reproduce 50-20,000 Hz. There’s a line-out jack so you can expand the sound system. The Sima Inflatable Backyard Home Theater Kit is about $1700.00 from Sima, but it’s $949.95 from B&H online.