Weighing 6.4 ounces (with battery), this 0.9-by-1.9-by-4.4-inch projector fits as easily into your hand. Its best features are its 640 by 480 native resolution and its brightness rating of 12 lumens. But its 10,000-hour LED life is only half of what...

The PJM-1000's combination of portability, flexibility for power connections, surprisingly useful tripod, and image quality for data projection makes it most appropriate as a business companion for a laptop. Keep it in your laptop bag, and you'll be...