There are many use cases for needing video to be sent to a remote monitor, and many reasons why this has to be done wirelessly. But most of the products designed for transmitting video wirelessly from your camera to a remote monitor have been too expensive, and cheaper DIY solutions have been too clunky (mounting, powering, latency, etc).
But now there's hope for the masses. The Accsoon CineEye is an exciting new Pocket-Sized 5G Wifi Video Transmitter first introduced at the 2019 NABShow. The design is simple. Small, internal rechargeable battery, and a single HDMI input. Instead of requiring a separate receiver, the video feed from your camera is sent through the CineEye and viewed on a smartphone or Tablet via a Wifi connection and an App.
Since we're talking about using a smartphone as a monitor, the Accsoon CineEye App includes many 'monitoring features' you might find in more professional monitors such as zebras, focus peaking, histograms, and even LUT support.
If you're looking to share your video feed to multiple screens, the CineEye is capable of streaming up to 4 devices simultaneously without degrading performance. Speaking of performance, the latency of the video stream is incredibly low and seems fast enough to pull focus with during a live shoot. Retail price should be just around $210 US dollars, which in my opinion is a steal. The CineEye will be available on Amazon later this month (check here).