Use 4.3inch IPS TFT LCD and resistive touching screen, with a larger view angle and can be seen clearly in strong outdoor light. Switch to a large capacity 4000mAh/3.7V lithium battery, longer standby time, and expand a USB interface. Usually, it can be used as a power bank when the instrument is not used. The Lipo charing IC to be changed to IP5306 (with 2A high charing current), making the charging time shorter. Use a larger and better operating level. Use a larger and better operating power switch.<br><br>Support Chinese and English menu switching. Upgrade the user program by virtual U disk (16MB SPI flash memory inside). The -F measurement range is 50k-1GHz. Use the harmonic of the clock chip SI5351 to measure frequency up to 1000MHz. At 600M-1GHz, the S11 has a dynamic range of 40dB (the standing wave ratio is less than 1.02). The RF front end is designed with a metal shield that allows the S21 to have a dynamic range 60dB over the full frequency range. (Accessories are as shown in the picture. Some accessories are sent randomly and cannot be specified. They will not affect the use.) Colour:black Material:Metal <br><br>Package Contents: 1 x Handheld Vector Network Analyzer set<br><br>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.