Features: Measuring S Parameters, Voltage- Standing Wave Ratio, Phase, Delay, Smith- Chart. The metal shield- is designed to reduce the external interference and improve the measurement accuracy. Small and portable, easy to use, this project aims- to provide an RF- gadget- but useful instrument for enthusiast-. The PC control- software can export Touchstone- (snp-) files-, which can be used for various radio design and simulation software. Latest HW3.6 antenna analyzer with SD- card slot design, for recording data up to 32GB, great for data storage and sharing-. Specifications: Material: Plastic Measurement Frequency: 50KHz-1.5GHz RF- Output: -13dbm(Maximun -9dbm) Frequency Accuracy: Less Than 2ppm Frequency Stability: Less Than 0.5ppm Measuring Range: 70dB(50kHz-300MHz), (50dB(300M-900MHz), 40dB (900M-1500MHz)); Port SWR: Less Than 1.1- Display: 2.8" TFT- (320x240) USB Interface: Type-C Communication Mode-: CDC- (serial-) Power Supply: USB 5V 120mA, built-in 400mAh battery, maximum charging current 1A-, can be used continuously for more than 4hours Number of Calibration Points: 101 (Fixed) Number of Scan Points: 101 (Fixed) Display Trace: 4, Tag: 4, Settings Save: 5 PCB- Size: Approx. 54x85.5x11mm/2.13x3.37x0.43in (No Connector & On off) Package Includes: 1x Host(including 2.8-inch Touch-Screen, 400mAh Battery) 2x 20cm SMA- male-to-male RG174 RF- Cable 1x SMA- Female to Female Connector 1x SMA- Simple Calibration Sets SHORT 1x SMA- Simple Calibration Piece Set OPEN 1x SMA- Simple Calibration Package LOAD 1x Type-C Data Cable 1x Touch-Pen 1x Pick 1x Connecting Cable from Type-C to Type-C note: NanoVNA-H PCB- upgrade- New features after the update: Lower power supply- noise, less noise when using harmonics; Built-in 400mAh battery Add a MicroSD- card for storing test data; Add RTC- support. Change the port names- to Port1- and Port2 MicroSD- supports up to 32GB and only supports SPI- mode-.