A. Features: 1. It is equipped with a 2.4-inch color touch screen, which can allow users to read data more smoothly and provide a better experience. 2. It has a built-in lithium battery, so there's no need to worry about sudden power failure affecting use. 3. It supports the TYPE-C interface upgrade, 3.5mm stereo audio output, and 3.5mm audio fm antenna interface, with a maximum charging current of 1.5A. B. Function: 1. Radio frequency spectrum scanning function 2. Backlight brightness adjustment 3. Backlight off 4. Battery voltage display 5. Battery percentage display 6. High-precision long-life encoder knob 7. FM RDS information display 8. Mobile APP network WIFI configuration 9. It has a 2.4G external antenna interface, and the signal is strong. 10. WIFI network time service display 11. Time zone customization 12. Support for Russian firmware upgrade (Russian firmware needs to be purchased at a fee, and the key authorization needs to be purchased by oneself). C. Frequency: FM: 64 functions 108MHz/RDS functions LW: 153khz 500khz MW: 520khz 1710khz SW: 1730khz 30000khz SSB: 1730khz 30000khz D. Antenna interface: BNC E. Product parameters: Built-in lithium battery 3.7V/2000ma TYPE-C upgrade and charging Shell size: 11.1 x 10.2 x 4.7cm, excluding protruding part Material: Aluminum alloy Colour: Black F. Package Contents: 1 x 1 x wifi antenna 1 x Rod antenna 1 x Touch pen 1 x TYPE-C charging data cable 1 x Screen wiping cloth 1 x Corner pad Only the above package content is included, and other products are not. G. Note: Light reflection and different displays may cause the color of the item to be a little different from the real thing. The measurement allowed error is +/- 1 - 3cm.