As one of its daily deals, Amazon offers the 3M LED Mobile Projector, model no. MP225a, with a spare battery for $184.98. (Add both items to cart to see this price.) In cart, it falls to $124.99. With free shipping, that's $152 under the lowest total price we could find for these items if purchased separately elsewhere. It features an 800x600 maximum resolution, 32 lumens, up to 80" projected image size, 20,000-hour LED light source, and VGA input. Deal ends today.