Features: Development board size: 51.77x28.45mm. Support ArduinoIDE mixly, mind+, Python and other programming software. Support VIN external wide voltage input 5-12V power supply (battery version maximum 5.5V input) Support USB power supply, external 3.3V power supply, and VIN power supply three kinds of power supply Mode . USB driver chip: CH340C, with good system compatibility, higher download speed, and more stability. Weight about 9.5g. brand new and high quality Specifications: Development board model: ESP32-DevKitC-32 Module model: ESP32-WROOM-32 Main control chip: ESP32-DOWDQ6-V3 dual-core 32bit MCU integrated WiFi, Bluetooth, Integrated 520-kBSRAM, 448-kBROM16-kBSRAMinRTC External storage: 4MB Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x ESP32 Development Board