Using ESP32-S3 main control, 1.9-inch IPS high-definition color screen Use SI4732 chip, supports full-band broadcast, LSB, USB, AM, FM modes Built-in 800 mAh battery, battery life approximately 10 hours or more Equipped with a portable loop antenna, can receive frequencies from 9.9 kHz to 181 MHz Shell made of PETG material via 3D printing process The small loop antenna supports a broad frequency range from 9.9 kHz to 181 MHz, enabling directional reception; rotate the antenna to find the optimal receiving angle for clear and stable signals Main control: ESP32-S3 Receiving frequency bands: HF, SW, MW, VHF Screen size: 1.9 inches Charging interface: TYPE-C (does not support fast charging) Audio interface: 3.5 mm three-conductor stereo jack Battery capacity: 800 mAh Color: Blue Material: Plastic Package contents: 1 x MINI SI4732 radio 1 x Loop antenna Note: Installation guide not included. Please verify the item meets your requirements before purchase. Product updates may occur; due to different production batches, the actual product may have slight variations in appearance, color, or printed text, which do not affect functionality Light reflection and differences in display screens may cause slight color variations between the product image and the actual item Measurement error allowance: +/- 1-3 cm Note: Only the items listed above are included; other accessories are not part of the package