Good quality for the price but without optical zoom, video quality will be degraded when using digital zoom. The phone controller works fine, but you need to disconnect from wifi.
Pros
Rechargeable Camera: This camcorder has a built-in 4.35V 1000mAh lithium battery. Use the included micro USB cable to charge the camcorder for more than 2 hours until the camera is fully charged. It can record up to 1 hour of video in UHD mode 4K. The camera also supports video recording while charging, you can connect the camera to the power bank via a micro USB cable for longer recording.