1. 4.3 inch TFT color LCD display provides a resolution, clear view with no distortion for precise spectrum observation. 2. Wide frequency range from 35 MHz to 4400 MHz enables coverage of walkie talkies, toy remote controls, and 2.4 GHz wifi devices, delivering precise spectrum analysis across a broad band. 3. Sturdy and durable all aluminum alloy enclosure with a rotary encoder control for a stylish, intuitive, and reliable user experience in field or workshop environments. 4. Accurate signal analysis using a precision VCO source to measure heterodyne frequencies; adjustable RBW levels and scan span allow targeted or wide sweeps for detailed analysis. 5. Comprehensive specifications include a spectrum scan span up to 350 MHz; RBW adjustable from 10 kHz to 500 kHz; dBm range 70dB to 10dB; manual calibration adjustments enable accurate measurements, making this a versatile tool for signal analysis. Applications Field service and interference diagnosis for 2.4 GHz devices such as walkie talkies and wifi equipment. Development, testing, and troubleshooting of RC toys, remote controls, and related hardware. Verification and debugging of wifi devices and accessories to assess spectrum performance and compliance in the 2.4 GHz band.