1. ESP32-S3 master control, 1.9-inch IPS high-definition color screen 2. SI4732 chip supports full-band broadcasting, LSB, USB, AM, FM modes 3. Built-in 800 mAh battery, battery life approximately 10 hours or more 4. Supports screen backlight brightness adjustment, battery power display, AGC/ATT 5. Built-in 1W power speaker, supports firmware upgrade Built-in headphone amplifier circuit provides loud volume when using headphones (first generation product does not include headphone amplifier circuit and has low volume with headphones) Master control: ESP-32-S3 Working modes: FM, AM, LSB, USB (does not support aviation band) Receiving bands: HF, SW, MW, VHF Frequency range: LW, MW, SW (150 kHz - 30 MHz), VHF (64 - 108 MHz) Screen: 1.9 inches, 170 x 320 resolution Charging interface: TYPE-C (does not support fast charging) Audio interface: 3.5 mm three-conductor stereo Antenna interface: SMA-KE (female) Battery capacity: 800 mAh Note: Due to different production batches, printed labels may vary; this does not affect functionality Color: Blue Material: ABS Package Contents: 1 x SI4732 radio receiver 1 x telescopic antenna 1 x charging cable 1 x circular antenna (color randomly selected, specific color requests cannot be accommodated) The package includes only the items listed above; other items are not included Note: Lighting and display differences may cause slight variations in color between the image and actual item. Measurement tolerance: +/- 1-3 cm