The main selection criterion was, other things being equal, a camera with a battery and the ability to rotate. Criteria met 100%. I am satisfied with the purchase. With its pros: High quality and functional. There is a battery for both the monitor and the camera. Can turn. You can watch and control not only from the monitor, but also from any smartphone from anywhere. Catches a signal through a wall of foam blocks. Got cons: The battery on the camera is discharged in ~ 3 hours of operation.