Generic AMNVOLT V4 ATS MINI Radio IPS Screen Si4732 DSP Radio AM FM Receiver (Metal) (StyleB)

Specification: Origin: Mainland China Important Notice: 1. Headphones are not included in shipping. The headphones in the image are intended only for demonstrating the FM antenna functionality. Take care of your own headphones! 2. If you selected the version of the metal case, please note that the aluminum alloy material provides some shielding from wireless electromagnetic signals. Although this improves interference resistance, it can also weaken the strength of the -Fi signal. Please confirm this before purchasing. V4 Upgrade Details: 1. Shielding cover added to the Si4732 receiver section to suppress electromagnetic interference; built-in ESD protection chips on the antenna input for improvement. 2. Moves the Hi-Z circuit to the front of the antenna path and adopted a more stable VCC_RADIO power supply to maintain signal resonance and reduce noise. 3. Added functionality to use wired headphones as an FM antenna (requires use in environments with strong FM signals and sufficiently long headphone cables for optimal performance). 4. Left and right channels have been swapped; amplifier and speaker parameters have been recalibrated to improve audio quality. 5. Upgraded to higher quality components: a sturdier telescopic antenna and a better-touch, non-slip button. Brand: AMNVOLT Model (hardware version): V4 Housing material: -machined metal Main controller: ESP-32-S3 Operating modes: FM/AM/LSB/USB (Note: does not support aviation tires) Receiving Tires: HF/SW/MW/VHF Frequency Range: LW, MW, SW (150kHz - 30MHz), VHF (64-108MHz) Screen: 1.9 inch, 170*320 resolution Display Brightness: 32~255 levels, adjustable Charging port: TYPE-C (cannot be charged with fast chargers) Audio jack: 3.5 mm 3-pin stereo Antenna Connector: SMA-KE (female) Battery Capacity: 800mAh Housing material: Metal (CNC-machined