1. Lower supply noise, less noise when using harmonics;2. Built-in 400mAh battery3. Add a -SD card to save the test data;4. Add support;5. Modify the port names to Port1 and Port2Measurement Frequency: 10KHz -1.5GHzRF Output: -13dbm (maximum -9dbm)Frequency Accuracy: Less than 0.5ppmMeasurement Range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB (600M-900MHz) enable extended firmware)Port SWR: Less than 1.1Display: 2.8 inch TFT (320 x240)USB Interface: USB Type-C; Communications Mode: CDC (Serial) Supply: USB 5V 120mA, built-in 650mAh electricity, maximum charging current 0.8ANumber of Calibration Points: 101 (Fixed)Number of Scanning Points: 101 (Fixed)Display Tracking: 4, Marking: 4, Save Setting : 5Measuring S parameters, voltage standing wave ratio, phase, delay, chart and the likeColour:blackMaterial:Metal + PlasticPackage Contents:1 x NanoVNA host (including 2.8-inch touch screen, 400mAh battery)2 x 20cm SMA male to male RG174 RF cable1 x SMA female to female connector1 x SMA Simple Calibration Kit SHORT1 x SMA Simple Calibration Kit OPEN1 x SMA Simple Calibration Kit LOAD1 x USB Type-C data cable1 x Touch pen1 x PicksOnly the above package content, other products are not included.Note: Light 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.