1. Main control module uses the ESP32-S3-N16R8 WiFi + Bluetooth 5.0 wireless module, an IoT dual-core MCU module. 2. Main chip uses the SI4732 chip, supports AM/FM/SW/RDS Modes 3. The display module features a 1.9-inch color TFT display with a 170x320 dot matrix, providing clear and natural colors. 4. A receiver op-amp circuit significantly improves sensitivity. 5. The housing and encoder knob are CNC-machined from aluminum alloy, with a hard-anodized finish for a longer-lasting color. Basic Usage:1. Push the power switch on the side to turn on the radio. 2. and hold the encoder briefly (300ms): Switches between search mode (magnifying glass in the upper left corner) and frequency mode (+/- icons in the upper left corner). In SSB mode, this turns on BFO adjustment. 3. and hold the encoder (700ms): Adjusts the volume. 4. Single-click the encoder: Switches between the band menu. 5. Double-click the encoder: Sets the menu. 6. Triple-click the encoder: Reads a stored station (auto-search is automatically turned off after reading a SSB station). 7. Quadruple-click the encoder: Calibrates the battery voltage. 8. and hold the encoder for more than 2 seconds: Soft-off/on. 9. and hold the encoder to power on: Clears all band settings and restores defaults. 10. and hold the encoder: Adjusts the volume. This function is prone to error and requires proficiency. Color: Silver Material: CNC Aluminum Alloy Package Contents: 1 x Radio Kit 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.