Cobra x V2 and V4

--The official website currently sells V2, but in fact the label on the product is V4. They are the same product. Here is a detailed explanation.

V1 is original,
V2 is support 60FPS DVR so we named it V2, and hardware is also V2
V3 is new CHIP due to global chip shortage, but user experience is same, so hardware is V3, we still name it V2
V4 is new screen due to old screen is discontinued, we change the screen, hardware is V4, but user experience is same as V2, we still called it V2, the reaseon put model on box is that user can flash different firmware, they must flash the correct the firmware to the hardware