1. Functions: RDS (Radio Data System) data display, automatic/manual station scanning, squelch function, battery voltage display, variable themes, multi-language, station presets, etc.
2. Main control chip: ESP32-WROOM-32U, Flash 4MB, Wi-Fi+ Bluetooth dual-core module
3. Display: 2.8 inch 320x240 resolution, IPS full-viewing angle LCD screen, with resistive touch
4. Control mode: default digital keyboard input and knob tuning mode, also support third-party touch screen firmware
5. Antenna interface: full-band using external antenna, standard SMA external screw female connector
6. Speaker output: TI audio amplifier chip TPA6211A1, drive 45 x 45mm large size cavity speaker, power 4 ohms / 3W, output noise is lower, less distortion
7. Headphone output: AD headphone amplifier chip MAX97220, standard 3.5mm 8. audio connector output, speakers and headphones independent bi-amplifier design, respectively, optimize each other does not affect
9. Battery capacity: 3.7V/5000mAh, 18.5wh
10. Current consumption: about 3.7V/350mA, using time about 15 hours
11. Communication interface: built-in CH340 USB to serial chip, external communication through Type-C interface
12. Size: about 14.2 x 3 x 8cm (without antenna connector and antenna)
13. Weight: about 300g
