The Optoma UHL55 is a portable 4K projector that was released in the fall of 2018. It’s capable of projecting a 150-inch image and it normally costs $1,500, but Amazon just lowered the price by quite a lot — for the first time, you can purchase the Optoma UHL55 for under $1,000.

Other than being fairly small and able to play 4K content, the Optoma UHL55 has a bunch of other things going for it. It’s a smart projector that works with either Amazon Alexa or Google Assistant; you can use voice commands to power the projector on and off, change volume change the input.
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https://gearpatrol.com/2019/07/12/optoma-uhl55-portable-4k-projector-amazon-deal/