based ESP32-S2FN4R2 WIFI ICType-c USB27 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported , DAC, I2C, SPI, UART, USB OTG with:MicroPython, Default firmware: MicroPython with shields with for MicroPython, for and for ESP-IDFDefault firmware: for MicroPythonTechnical specs:Operating Voltage: 3.3VDigital I/O Pins: 27Clock Speed: 240MHzFlash: 4M BytesPSRAM: 2M BytesColour:PurpleMaterial:PCBSize:34.3 x 25.5mmPackage Contents:1 x S2 Mini Development BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.