1. The Xmini-C3 development board is designed and open-sourced by Xiaozhi AI creator Xia Ge. It uses ESP32-C3 as the main control chip, with 16MN0RFLASH on board. The audio uses ES8311 audio decoding and NS4150 power amplifier IC solution. It uses a ceramic antenna and can run the latest version of Xiaozhi A1 smoothly and normally. 2. Supports BOOT button wake-up (does not support offline voice wake-up) 3. Supports automatic 0TA upgrade of the new version (16MFLASH) 4. Supports continuous multi-round dialogue and interrupts the dialogue with the BOOT button. 5. Supports 0.96-inch SSD13060LED display (monochrome/dual color), supports expression and status display (subtitle version cannot be automatically updated for the time being)<br><br>Supports 3.7V lithium battery power supply and charging (battery power detection is not supported for the time being). Supports 3W-5W cavity speaker interface. The expansion interface is 6Pin, two-way power supply and two 10 interfaces, supporting external IO devices (to be developed). Main control: ESP32-C3QFN-32-EP Flash: NOR FLASH16MB Audio + amplifier: ES8311 + NS4150B Power chip: LGS4056 (single lithium battery) Expansion interface: UORXD, UOTXD, VSys + GND (VSys voltage is about 4.5V), 3V3 + GND USB interface: supports burning programs and computer serial port communication, supports TYPE-C standard 5V charging/power supply Accessory interface: battery, standard 1.25mm interface Speaker, standard 1.25mm interface (recommended speaker about 3W) The product appearance and printed words may vary depending on the batch, but this does not affect use. Colour:As Shown Material:plastic<br><br>Package Contents: 1 * AI Voice Chat Robot<br><br>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.