Technical Specifications - 32Bit Dual Core 240MHz - RISC-V Ultra-Low Power Core - 2.4GHz Wi-Fi - 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 + 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 - Compatible with TinyPICO, TinyS2, and TinyS3