... monitor Built-in 4 CH 2.4GHz Wireless Receiver, USA Techwell DSP,with easy removable with Sun ... Visor,Built-in 4 CH 2.4GHz wireless receiver 2.Display Resolution: 640RGB(H) X 480(V ... .414/2.432/2.450/2.468)GHz Wireless Receiver(Standard 4CH Select 2CH)Receiving sensitivity: ≤-85dBDisplay Resolution ... monitor Built-in 4 CH 2.4GHz Wireless Receiver Verified Information This information is Verified by Bureau ...