1. Adopt ESP32-S3 master control + SI4732 chip, support full-band broadcast, LSB USB AM FM mode, support AGC/ATT function 2. Adopt 1.9-inch IPS high-definition color screen, support screen backlight brightness adjustment, support battery power display 3. Built-in 800 mAh battery, battery life is about 10 hours or more 4. Built-in 1W power cavity speaker, loud and pleasant sound quality 5. Support firmware upgrade, currently built-in V1.01 version firmware (the manual also has a tutorial) 6. Easy to operate: all actions can be performed with a single /rotation of the rotary encoder button 7. Made by , better quality Parameters: Master control: ESP-32-S3 Working mode: FM/AM/LSB/USB (note, does not support aviation band) Receiving band: HF/SW/MW/VHF Frequency range: LW, MW, SW (150kHz - 30MHz), VHF (64-108Mhz) Screen: 1.9inch, 170*320 resolution Brightness: 32-255 adjustable Charging interface: TYPE-C (cannot be with fast charging) Audio interface: 3.5mm three-stage stereo Antenna interface: SMA-KE (inner hole) Battery capacity: 800ma Colour:Blue Material:ABS Package Contents: 1 x MINI SI4732 radio 1 x round antenna (antenna color is random, don't accept the specified color) 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.