I bought a portable monitor and it only worked a couple of time. I tried to get refunded or replace with a new device. They keep asking me sending video and I did but they cannot open the video for some reason. I sent the same video to my firends but they can play it. I feel like they are tryting to avoid the issue by replying a nonsense messages back to me. Eventually they offered me 20% of purchase amount refund to end the issue. Do not waste your time and energy.