In the past just an AndroidTV 'wannabe', WETEK intros REAL AndroidTV with 2 models. Likely not offered to end users but targeted to carriers.
I bought a Wetek Play 2 in late 2016 and I really didn't care for it. Wasn't worth the $130 price tag. It did have a OTA ATSC 2 tuner port built in but it needed an air mouse to function correctly. And for multiple TV's, HDHomeRun setup was much cheaper.
First of all they are based in Europe so everything is geared towards the systems they use over there. Second a home user took the time and made an Android TV OS for the box and they didn't like it on their forums.
I had to sell the box on ebay even though I was within the return window because shipping back to Europe wasn't worth it.
The 4G LTE modem is an oddity, but given it says it isn't for the US market it makes sense.