High-performance MCU: Nordic Semiconductor's nRF52840 chip with 64 MHz FPU, multiple development ports, for Arduino/CircuitPython/MicroPython compatible Advanced wireless connectivity: Bluetooth 5.0 with built-in antenna and NFC support Efficient power management: Integrated Li-ion battery charging, 5 A deep sleep power consumption Expanded 20 GPIOs: 9 additional 1.27mm pitch SMD castle pins beyond the standard XIAO nRF52840 With native TensorFlow Lite, it is the ideal development platform for your advanced embedded machine learning and AIoT projects<br><br>Processor: Nordic nRF52840, ARM Cortex-M4 32-bit processor with FPU, 64 MHz Wireless connection: Bluetooth 5.0/BLE/NFC Memory: 256KB RAM, 1MB Flash 2MB onboard Flash Onboard button: reset button Onboard LED: 3-in-1 LED/charging LED Battery charging chip: BQ25101 Programming language: for Arduino/MicroPython/ CircuitPython The product appearance and printed words may vary depending on the batch, but this does not affect use. Colour:As Shown Material:PCB<br><br>Package Contents: 1 * XIAO nRF52840 Plus<br><br>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.