1. Lower power supply noise, less noise when using harmonics; 2. Built-in 400mAh battery 3. Add a Micro-SD card to save the test data; 4. Add RTC support; 5. Modify the port names to Port1 and Port2 Measurement Frequency: 10KHz -1.5GHz RF Output: -13dbm (maximum -9dbm) Frequency Accuracy: Less than 0.5ppm Measurement Range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB (600M-900MHz) enable extended firmware) Port SWR: Less than 1.1 Display: 2.8 inch TFT (320 x240) USB Interface: USB Type-C; Communications Mode: CDC (Serial) Power Supply: USB 5V 120mA, built-in 650mAh electricity, maximum charging current 0.8A Number of Calibration Points: 101 (Fixed) Number of Scanning Points: 101 (Fixed) Display : 4, Marking: 4, Save Setting : 5 Measuring S parameters, voltage standing wave ratio, phase, delay, Smith chart and the like Colour:black Material:Metal + Plastic Package Contents: 1 x NanoVNA host (including 2.8-inch touch screen, 400mAh battery) 2 x 20cm SMA male to male RG174 RF cable 1 x SMA female to female connector 1 x SMA Simple Calibration Kit SHORT 1 x SMA Simple Calibration Kit OPEN 1 x SMA Simple Calibration Kit LOAD 1 x USB Type-C data cable 1 x Touch pen 1 x Picks Only the above package content, other products are not included. Note: Light shooting 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.Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.