Specification: Origin: Mainland China Power Supply: 2.2v To 3.6v Operating Voltage: 3.3v Logic Level: 3.3v Mounting Hole Diameter: 2 Holes, 3mm Diameter Integrated 802.11 Bgn Wifi Transceiver Integrated Dual-Mode Bluetooth-Compatible 4mb Flash Memory Maximum Serial Port Baud Rate: 256000bps Interface: Micro Or Type-C Product Size: 49.00x26.00x7.00mm/1.93x1.02x0.28inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1*Development Board (Micro)/1*Development Board (Type C) 1.Effortless Connectivity: Enjoy seamless internet access with the MicroPython ESP32 wifi bluetooth-compatible development board's integrated wireless networking capabilities, ensuring you can develop and deploy IoT applications with ease. 2.Bluetooth-Compatible: Incorporate wireless communication into your projects effortlessly with the wifi & bluetooth-compatible board's built-in Bluetooth-compatible feature, allowing for simple data exchange and connectivity with other Bluetooth-compatible devices. 3.Ample Storage Space: With 4MB of flash memory, this BT-compatible wifi development board provides plenty of room for your code and libraries, making it suitable for complex and memory-intensive applications. 4.Battery-Ready Interface: The wifi bluetooth-compatible board antenna's lithium battery connector supports a maximum charging current of 500mA, enabling your projects to be energy-independent and mobile with extended operational times. 5.MicroPython Preloaded: Jumpstart your programming with MicroPython already installed, development board offering a straightforward and Pythonic programming environment, which simplifies coding for beginners and experts alike.