Features: Precise 2.8inch handheld spectrum analyzer,for portability and equipped with a wide frequency ranging to support diverse signal analysis needs. This device features signal generator and supports PC connection, ensuring high accuracy measurements that are easy to operate in any setting. For electronic engineers, amateur radio enthusiasts, technicians, and educators seeking reliable tools for their projects. Perfectly for laboratory testing, on site troubleshooting, educational training, and equipment maintenance and tuning tasks. From durability PCB, this spectrum analyzer is essential addition to your toolkit, offering versatility and efficiency for both professional and educational applications. Specifications: Model：2.8inch Handheld Spectrum Analyzer Support 100kHz-350MHz Frequency Accuracy：1ppm Size:about 58.7x91.3x17.1mm/ 2.31x3.59x0.67in Package Type: 2.8inch Handheld Spectrum Analyzer/ Spectrum Analyzer and Touch Pen Optional Package Includes: 1PC 2.8inch Handheld Spectrum Analyzer note: Due to the problems of lighting effects, there might be tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.