Accsoon M1 1080p Video Transmitter, HDMI to UVC On-Camera Device for Android Smartphone for Monitoring Livestreaming and Recording NP-F Battery Power Supply

On paper this in theory did everything I wanted but a couple of niggles keep it from getting 5 stars.On my android tablet/phone - I could not charge my phone/tablet & use it as a HDMI converter at the sametime. It was one or the other, the moment it went into charge mode the phone/tablet no longer recognised the device was hooked up and the app stopped showing a feed. It's a problem if you need to use this on a long shoot.The app isn't well optimised for tablets - there's a awkward crop bar on the lower third of my tablet limiting the size/zoom you can view the screen from, I mean if I'm hooking it up to a 10" screen I want to make full use of that real estate