Canon Projector Rayo R4 is a mini projector, designed to fit in your pocket. The projector has a long-lasting battery and it's easy to use.
Ranked in these QuestionsQuestion Ranking
Pro Great battery life
The battery lasts for up to 2.5 hours, lasting long enough to watch a movie or even two. Charging it takes 3 hours.
Convenient to use as a portable device.
Pro High resolution
The resolution is comparatively high.
Con Low quality picture
The 640 x 480 resolution produces a low-quality picture. Pretty much the only review for this projector is the original document from Canon, so there is no objective information available about the picture quality. They did state a contrast ratio of 800:1, which falls far behind the best portable options.
Con Low lamp-life
Though it's 10,000 hours, portable projectors usually reach 20,000-30,000 hours. Projector lamps lose brightness over time, so you might actually have to replace the lamp and the replacement is probably not available.