Features: Development board model: ESP32-DevKitC-32 & Module model: ESP32-WROOM-32 Main control chip support ESP32-DOWDQ6-V3 dual-core 32bit MCU integrated WiFi, Bluetooth-compatible USB driver chip: CH340C, with good system compatibility, higher- download speed, and more stability. 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 development Support ArduinoIDE mixly, mind+, Python and other programming software 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-compatible Integrated 520-kBSRAM, 448-kBROM16-kBSRAMinRTC External storage: 4MB Size: approx 52x28mm/2.05x1.1in Weight about 20g Package Includes: 1PC ESP32 CH340C Development Board note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is1-3cm