The board supports Wi-Fi ((802.11 b/g/n) and Bluetooth (5), perfect for all your IoT projects. It includes 15 GPIO pins, 12-bit ADCs, I2C, SPI, USB Serial and UART peripheral. Additional features includes a built-in Lipo / Li-ion battery charger and monitoring circuit along with Glink connector for easy integration with QWIIC, STEMMA QT compatible sensors produced by Sparkfun & Adafruit respectively.