• Optoma PK31 4k Projector. • EASILY CONNECT your favorite HDMI 4K streaming device to the 4K HDMI port on PK31/PK32 to watch your favorite TV Shows, Movies, and Sporting events in glorious 4K HDR. In addition, Streaming stick versions can utilize USB Power on the projector, bypassing the need to use an external power source.source.
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