High-performance MCU: Nordic Semiconductor's nRF52840 chip with 64 MHz FPU, multiple development ports, compatible with CircuitPython and MicroPython Advanced wireless connectivity: Bluetooth 5.0 with built-in antenna and NFC support Efficient power management: Integrated Li-ion battery charging, 5 μA deep sleep power consumption Expanded 20 GPIOs: 9 additional 1.27 mm pitch SMD castellated pins beyond the standard XIAO nRF52840 Supports TensorFlow Lite for embedded machine learning and AIoT applications Processor: Nordic nRF52840, ARM 32-bit processor with FPU, 64 MHz Wireless connection: Bluetooth 5.0 / BLE / NFC Memory: 256 KB RAM, 1 MB Flash, 2 MB onboard Flash Onboard button: Reset button Onboard LED: Status LED / Charging LED Battery charging chip: BQ25101 Programming language support: CircuitPython, MicroPython Color: As shown Material: PCB Package Contents: 1 × XIAO nRF52840 Plus Note: The product appearance and silkscreen may vary slightly by batch, but functionality is unaffected. Lighting conditions and display settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.