Features: 1,Equipped with a 2.4 inch color touch screen, it can let you read data more smoothly and provide you with a better user experience. 2,Built-in -capacity lithium battery, no need to worry about sudden power failure affecting use. 3,Support the TYPE-C interface upgrade program, 3.5mm stereo audio output, and 3.5mm audio fm antenna interface, with a maximum charging current of 1.5A 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. With 2.4G external antenna interface, the signal is strong 10. WIFI network time service display 11. Time zone customization 12. Support Russian firmware upgrade (Russian firmware needs to be purchased at a fee, please purchase the key authorization yourself) Frequency: FM: 64 functions 108MHz/RDS functions LW:153khz 500khz MW:520khz 1710khz SW:1730khz 30000khz SSB:1730khz 30000khz Antenna interface: BNC Product parameters: Built-in lithium battery 3.7V/2000ma TYPE-C program upgrade and charging Shell size: 11.1 x 10.2 x 4.7cm, excluding protruding part Material: Aluminum alloy colour: Black Package Contents: 1 x Host 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, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.