290 sweep points displayed, 0-350MHz fastest sweep time 405ms, shortest zero span time 1.8ms, 10kHz sweep from 0MHz to 350MHz takes about 2 minutes, switchable resolution bandpass filter, suitable for 2.6kHz and two ranges between 640kHz spectrum analyzer is not a spectrum analyzer, it can use two frequency outputs as signal generator, MF/HF/VHF sine output at 0.1MHZ-350MHz, UHF square wave output at 240MHz- Between 960MHz, built-in - calibration signal generator for automatic self-test and low input calibration The spectrum analyzer can be connected with a PC via USB to implement the Serial USB (CDC) protocol and call a number of commands via the serial interface. These commands can be used to measurements or update internal . After connecting to a Windows computer, the Windows driver will be automatically installed, and the has a built-in Linux driver. The latest version V0.3.1 version information is "ESD protection", the installed diodes are more stable, more , higher anti-static level, and service life. Built-in 650mA battery, continuous use for at least 2 hours. Colour: Black : metal + plastic Package Contents: 1 set spectrum analyzer 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.