1. The 4-inch full- LCD screen has added DC dimming, and it can be seen more clearly when used outdoors, and it is more comfortable to use indoors. 2. Optimized to make full use of the Si5351x27;s harmonics. Now the 5th harmonic can be used to measure to 1.5GHz; 3. When the fundamental wave is used, the output level of CH0 is increased to 0dBm, and the reflection measurement is more accurate; 4. Solve the previous abnormality of NanoVNA-H near 6MHz; 5. Reproduce the designed power management circuit, further reduce power noise, reduce USB power interference, reduce charging current, and protect the battery; 6. Optimized PCB layout, accommodating 1950mAh battery, more than 8 hours of use; 7. Reserved UART interface, convenient for DIY expansion; 8. The new ABS shell is made when the mold is opened, which is light and convenient, and protects the machine; Colour:Photo Color Material:ABS Package Contents: 1X NanoVNA (including 4-inch touch screen, 1950mAh battery) 2X 15cm SMA male to male RG316 RF cable 1X SMA female to female connector 1X SMA simple calibration kit SHORT 1X SMA simple calibration kit OPEN 1X SMA simple calibration kit LOAD 1X USB Type-C data cable 1X Type-c to Type-c cable 1X pick 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.