1.150CH 5.8Ghz analog signal, 1500scans cover all bands. 2.Resolution 640x480 30fps. 3.Can display frequency spectrum,to check the signal strength of antenna or transmitter. 4.Support dual display on smartphone, can be used as VR goggles. 5.Please calibrate it in open area, and keep away from transmitter more than 30m. Long the menu button and power on receiver, enter into calibration mode. The 5.8g receiver, traditionally transferred to the screen, is passed to the phone and can be passed to the screen at the same time. . Powered by mobile phone,simplify wiring and structure! How to use:To the best results, please calibrate the highest and lowest signal before use.For calibration,please take it outside the open space and pull the transmitter away for more than 30 meters to calibrate. and hold the function button to power the receiver into calibration mode. 5.8G 150 frequency point map receiver, receiving images support to display: 1.OTG is connected to for Android phone or tablet (This product does not support for phone) 2.USB cable to connect PC 3.AV connected display The button color is random, no specified color is accepted Color: Black Material: Plastic + Plastic Package Contents: 1 x Box 1 x UVC main unit 2 x Reception antenna 2 x Data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.