Key Features 32Bit Dual Core 240MHz RISC-V ultra low power core 2.4GHz WiFi - 802.11b/g/n Bluetooth 5, BLE + Mesh 16MB QSPI Flash 8MB Extra QSPI PSRAM USB-C Connector USB ESD protection Reverse USB back-feed protection 2x 700mA 3.3V LDO Regulator Ultra low deep sleep current STEMMA connector Low Power RGB LED VBAT voltage check and 5V presence detection LiPo Battery Charging MicroBlade LiPo connector Power (red), Charge (orange) LEDs 27x GPIO broken out Castellated Headers JTAG Pins + USB Serial JTAG 3D High Gain Antenna or u.FL Compatible with TinyPICO, TinyS2 & TinyS3 Board Dimensions: 53mm x 17.8mm Max Thickness: 5.4mm at the vertical STEMMA QT connector The ProS3 ships with the latest version of CircuitPython that supports the ESP32-S3. It also ships with the UF2 bootloader, so you can easily update your ProS3 with the latest CircuitPython firmware, whenever you desire.