Features: Experience enhanced typing with our 2.8 inch analyzer, supporting a wide frequency ranges from 50KHz to 900MHz. Our keyboard is crafted using top quality materials, ensuring durability and a stylish design. Designed for individuals seeking comfort and smooth typing, our keyboard reduces hand fatigue and provides a seamless typing experience. Suitable for various settings like offices, libraries, and gaming rooms, our keyboard offer both functionality and style. Perfect for professionals and enthusiasts, our keyboard delivers a satisfying typing experience, meeting the demands of long hours of work or play. Specifications: Main Material: Plastic, Metal Measurement Frequency: 50KHz-300MHz(50KHz-900MHz, Enabling Extended Firmware) Radio Frequency Output: -13dbm Frequency Accuracy: Lower Than 0.5ppm Measuring Ranges: 70dB(50KHz-300MHz), 50dB(300MHz-600Mhz), 40dB(600Mhz-900Mhz) SWR: Less Than 1.1 Display: 2.8'' TFT(230x240) USB Interface: USB Type C Power: USB 5V 120mA, Built in 400mAh Battery, Charging Current: 0.8A Number of Calibration Points: 101(fixed) Number of Scan Points: 101(fixed) Package Includes: 1 Set NanoVNA Vector Analyzer note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.