Key features of the TES-1358E audio analyzer include: - Real-time 1/1 and 1/3 octave analysis for sound spectrum distribution - TFT-LCD color display for clear readability - Internal/external trigger measurement start for flexible applications - 90 dB measurement linear range for various environments - AC and DC output support for convenient external device connections - USB interface for easy data transfer to a computer - Built-in memory card for manual and automatic data storage - Accuracy of ±0.7 dB for high-demand measurement scenarios - Multiple frequency ranges suitable for different applications - Includes TAF report for enhanced data analysis