Setting up streaming requires connecting by Wi-Fi to an internet-connected network and signing in to Google. The Luma 400 has Android OS 9 built in-the Android Open Source Project (ASOP) version, as distinct from Android TV. The battery life range is from 1.5 hours in High mode to 2.5 hours in Eco mode, with Normal mode, at 2 hours, in between. There are three power settings to let you choose among highest brightness, longest battery life, or a compromise between the two.

The RGB LED light source is rated at 30,000 hours in full-power mode, and should last even longer in Eco mode. These artifacts affect only the occasional image with small repeating patterns, and the best focus I was able to manage was slightly soft, which isn't great in its own right but does tend to hide that sort of issue. Like most small projectors, it's built around a diamond-array DLP chip, which draws less power than TI's rectangular chips but can introduce scaling artifacts. However, its 1.1-pound weight and 1.3-by-4.9-by-4.9-inch size (HWD) put it firmly in the palmtop category. Small enough to fit in a large pocket, the Luma 400 almost qualifies as a pico projector. Lots of Features in a Surprisingly Small Case It's still worth considering, but the Luma 350 remains our Editors' Choice. The 400's key difference is a higher native resolution, at 720p (1,280-by-720), but its significantly more expensive and comes up a little short on image quality. The $449.99 Luma 400 is the next up from the Luma 350, our Editors' Choice among small palmtop portable projectors. Each step up in size comes with a step up in price, along with brightness, resolution, or both. The Kodak Luma 400 Portable HD Smart Projector is one of a family of Kodak models that all share the same proportions and could each fit into the next largest like a set of rectangular, flat nesting dolls.

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