Using ESP32-S3R8 as the main chip, equipped with high-performance Xtensa 32-bit LX7 dual-core processor, the main frequency is up to 240MHz Integrate 512kB RAM, 384kB ROM, 8MB PSRAM, 16MB Flash memory Integrate 2.4GHz Wi-Fi and low-power Bluetooth (Bluetooth LE) dual-mode wireless communication, with excellent RF performance Support seamless switching between for Arduino and MicroPython programming, more flexible to use Compatible with for Arduino IoT Cloud, use for Arduino IoT Cloud application to monitor and control user projects from anywhere Support HID, simulate human interface devices (such as keyboard or mouse) through USB, and interact with the computer more conveniently The product must be welded by yourself (no returns will be made if there are welding marks) Colour:Black Material:PCB Package Contents: 2x Development board 2x Pin header 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.