1. ESP32-S3 master control, 1.9-inch IPS high-definition color screen 2. SI4732 chip is used, supporting full-band broadcasting, LSB USB AM FM mode. 3. Built-in 800 mAh battery, battery life is about 10 hours or more. 4. Support screen backlight brightness adjustment, battery power display, AGC/ATT 5. Built-in 1W power speaker Support firmware upgrade, users can also modify the system by themselves Built-in headphone amplifier circuit, the volume is loud when listening with headphones (the 1st generation product does not have a headphone amplifier circuit, and the volume is very low when using headphones) 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) FM(0.5-108mhz) Screen: 1.9inch, 170x320 resolution Charging interface: TYPE-C (cannot use fast charging) Audio interface: 3.5mm three-band stereo Antenna interface: SMA-KE (inner hole) Battery capacity: 800ma Colour:Black Material:ABS Specifications: A: Red loop antenna Package Contents: 1 x Mini SI4732 Radio 1 x red Loop Antenna 1 x Telescopic Antenna (Different batches may result in different printed labels) 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.