Equipped with a 2.4 inch color touch screen, it allows you to read data more smoothly and provides you with a better user experience. Built in capacity lithium battery, do not worry about sudden power failure. Support TYPE-C interface upgrade program, 3.5mm stereo audio output, and 3.5mm audio fm antenna interface, with 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 the upgrade of Russian firmware (Russian firmware needs to be purchased for a fee, please purchase the key authorization yourself) Frequency: FM: 64 functions 108MHz/RDS function 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 parts Notice : Support the upgrade of Russian firmware (Russian firmware needs to be purchased for a fee, please purchase the key authorization yourself, and purchase the firmware website http://.harduino.ru/ ) :ELECTRICAL Model Number:ATS25X2 color:Black Material:aluminum alloy Package Contents: 1 x Host 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.